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Đorđević, Nataša

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  • Đorđević, Nataša (27)

Author's Bibliography

Kinetics of thermally activated processes in cordierite-based ceramics

Obradović, Nina; Blagojević, Vladimir A.; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Marković, Smilja; Kachlik, Martin; Maca, Karel; Pavlović, Vladimir B.

(Springer, 2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Blagojević, Vladimir A.
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/7048
AB  - Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetics of thermally activated processes in cordierite-based ceramics
SP  - 2989
EP  - 2998
VL  - 138
DO  - 10.1007/s10973-018-7924-1
ER  - 
@article{
author = "Obradović, Nina and Blagojević, Vladimir A. and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Marković, Smilja and Kachlik, Martin and Maca, Karel and Pavlović, Vladimir B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/7048",
abstract = "Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetics of thermally activated processes in cordierite-based ceramics",
pages = "2989-2998",
volume = "138",
doi = "10.1007/s10973-018-7924-1"
}
Obradović, N., Blagojević, V. A., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Kachlik, M., Maca, K.,& Pavlović, V. B. (2019). Kinetics of thermally activated processes in cordierite-based ceramics.
Journal of Thermal Analysis and CalorimetrySpringer., 138, 2989-2998. 
https://doi.org/10.1007/s10973-018-7924-1
Obradović N, Blagojević VA, Filipović S, Đorđević N, Kosanović D, Marković S, Kachlik M, Maca K, Pavlović VB. Kinetics of thermally activated processes in cordierite-based ceramics. Journal of Thermal Analysis and Calorimetry. 2019;138:2989-2998
1
1
1

Kinetics of thermally activated processes in cordierite-based ceramics

Obradović, Nina; Blagojević, Vladimir A.; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Marković, Smilja; Kachlik, Martin; Maca, Karel; Pavlović, Vladimir B.

(Springer, 2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Blagojević, Vladimir A.
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4558
AB  - Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetics of thermally activated processes in cordierite-based ceramics
SP  - 2989
EP  - 2998
VL  - 138
DO  - 10.1007/s10973-018-7924-1
ER  - 
@article{
author = "Obradović, Nina and Blagojević, Vladimir A. and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Marković, Smilja and Kachlik, Martin and Maca, Karel and Pavlović, Vladimir B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4558",
abstract = "Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetics of thermally activated processes in cordierite-based ceramics",
pages = "2989-2998",
volume = "138",
doi = "10.1007/s10973-018-7924-1"
}
Obradović, N., Blagojević, V. A., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Kachlik, M., Maca, K.,& Pavlović, V. B. (2019). Kinetics of thermally activated processes in cordierite-based ceramics.
Journal of Thermal Analysis and CalorimetrySpringer., 138, 2989-2998. 
https://doi.org/10.1007/s10973-018-7924-1
Obradović N, Blagojević VA, Filipović S, Đorđević N, Kosanović D, Marković S, Kachlik M, Maca K, Pavlović VB. Kinetics of thermally activated processes in cordierite-based ceramics. Journal of Thermal Analysis and Calorimetry. 2019;138:2989-2998
1
1
1

Characterization of pressure-less sintered MgO-Al2O3-SiO2-TeO2 system

Obradović, Nina; Đorđević, Nataša; Kosanović, Darko; Filipović, Suzana; Kachlik, Martin; Maca, Karel; Olćan, Dragan; Đorđević, Antonije; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2017)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Filipović, Suzana
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/15444
AB  - In this study, sintering of two systems was investigated in parallel, pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with addition of 5 mass % TeO2. Green bodies were prepared from powder mixtures mechanically activated for 0, 10 and 40minutes by uniaxial pressing at 20 MPa followed by cold isostatic pressing (CIP) at 1000 MPa. The pressure-less sintering of these specimens was performed at a temperature of 1350 oC for 1 h, with 10 oC/min heating rate. Densities over 96 % of theoretical values were obtained for samples activated for 40 minutes. XRD measurements of MAS-40 sintered sample pointed at a mixture that consisted of several phases, majority of cordierite (> 73 %), spinel MgAl2O4 (> 22 %), ZrSiO4 (2.5 %), and Al2O3 (1.8%), while XRD pattern of MAS-40-TeO2 contained majority of cordierite (> 72 %), spinel MgAl2O4 (> 23 %), ZrSiO4 (1.9 %), and Al2O3 (1.9 %). The relative permittivities of the samples were measured in an open test fixture. The results for the real part of the complex relative permittivity of the samples, measured at 200 MHz, are shown in Table I. The loss tangent for all samples was very small, below the resolution of the measurement setup (0.005).
There is a strong correlation between the relative permittivity and the density, which agrees with our previous results.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
T1  - Characterization of pressure-less sintered MgO-Al2O3-SiO2-TeO2 system
SP  - 70
EP  - 70
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Kosanović, Darko and Filipović, Suzana and Kachlik, Martin and Maca, Karel and Olćan, Dragan and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/15444",
abstract = "In this study, sintering of two systems was investigated in parallel, pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with addition of 5 mass % TeO2. Green bodies were prepared from powder mixtures mechanically activated for 0, 10 and 40minutes by uniaxial pressing at 20 MPa followed by cold isostatic pressing (CIP) at 1000 MPa. The pressure-less sintering of these specimens was performed at a temperature of 1350 oC for 1 h, with 10 oC/min heating rate. Densities over 96 % of theoretical values were obtained for samples activated for 40 minutes. XRD measurements of MAS-40 sintered sample pointed at a mixture that consisted of several phases, majority of cordierite (> 73 %), spinel MgAl2O4 (> 22 %), ZrSiO4 (2.5 %), and Al2O3 (1.8%), while XRD pattern of MAS-40-TeO2 contained majority of cordierite (> 72 %), spinel MgAl2O4 (> 23 %), ZrSiO4 (1.9 %), and Al2O3 (1.9 %). The relative permittivities of the samples were measured in an open test fixture. The results for the real part of the complex relative permittivity of the samples, measured at 200 MHz, are shown in Table I. The loss tangent for all samples was very small, below the resolution of the measurement setup (0.005).
There is a strong correlation between the relative permittivity and the density, which agrees with our previous results.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017",
title = "Characterization of pressure-less sintered MgO-Al2O3-SiO2-TeO2 system",
pages = "70-70"
}
Obradović, N., Đorđević, N., Kosanović, D., Filipović, S., Kachlik, M., Maca, K., Olćan, D., Đorđević, A.,& Pavlović, V. B. (2017). Characterization of pressure-less sintered MgO-Al2O3-SiO2-TeO2 system.
Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017Belgrade : Materials Research Society of Serbia., null, 70-70. 
Obradović N, Đorđević N, Kosanović D, Filipović S, Kachlik M, Maca K, Olćan D, Đorđević A, Pavlović VB. Characterization of pressure-less sintered MgO-Al2O3-SiO2-TeO2 system. Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017. 2017;:70-70

Sintering of fly ash based composites with zeolite and bentonite addition for application in construction materials

Terzić, Anja; Đorđević, Nataša; Mitrić, Miodrag; Marković, Smilja; Đorđević, Katarina; Pavlović, Vladimir B.

(International Institute for the Science of Sintering, 2017)

TY  - JOUR
AU  - Terzić, Anja
AU  - Đorđević, Nataša
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
AU  - Đorđević, Katarina
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/2393
AB  - Due to pozzolanic characteristics, fly ash is commonly used as a cement replacement in construction composites. Addition of natural clays with sorption ability (i.e. zeolite and bentonite) in to the fly ash based construction materials is of both scientific and industrial interest. Namely, due to the application of sorptive clay minerals, it is possible to immobilize toxic heavy metals from the composite structure. The thermal compatibility of fly ash and zeolite, as well as fly ash and bentonite, within the composite was observed during sintering procedure. The starting components were used in 1:1 ratio and they were applied without additional mechanical treatment. The used compaction pressure for the tablets was 2 t•cm-2. The sintering process was conducted at 1000ºC and 1200ºC for two hours in the air atmosphere. The mineralogical phase composition of the non-treated and sintered samples was analyzed using X-ray diffraction method. Scanning electron microscopy was applied in the analysis of the microstructure of starting and sintered samples. The thermal behavior was observed via DTA method. The influence of temperature on the properties of fly ash-zeolite and fly ash-bentonite composites was investigated
PB  - International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Sintering of fly ash based composites with zeolite and bentonite addition for application in construction materials
SP  - 23
EP  - 37
VL  - 49
IS  - 1
DO  - 10.2298/SOS1701023T
ER  - 
@article{
author = "Terzić, Anja and Đorđević, Nataša and Mitrić, Miodrag and Marković, Smilja and Đorđević, Katarina and Pavlović, Vladimir B.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/2393",
abstract = "Due to pozzolanic characteristics, fly ash is commonly used as a cement replacement in construction composites. Addition of natural clays with sorption ability (i.e. zeolite and bentonite) in to the fly ash based construction materials is of both scientific and industrial interest. Namely, due to the application of sorptive clay minerals, it is possible to immobilize toxic heavy metals from the composite structure. The thermal compatibility of fly ash and zeolite, as well as fly ash and bentonite, within the composite was observed during sintering procedure. The starting components were used in 1:1 ratio and they were applied without additional mechanical treatment. The used compaction pressure for the tablets was 2 t•cm-2. The sintering process was conducted at 1000ºC and 1200ºC for two hours in the air atmosphere. The mineralogical phase composition of the non-treated and sintered samples was analyzed using X-ray diffraction method. Scanning electron microscopy was applied in the analysis of the microstructure of starting and sintered samples. The thermal behavior was observed via DTA method. The influence of temperature on the properties of fly ash-zeolite and fly ash-bentonite composites was investigated",
publisher = "International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Sintering of fly ash based composites with zeolite and bentonite addition for application in construction materials",
pages = "23-37",
volume = "49",
number = "1",
doi = "10.2298/SOS1701023T"
}
Terzić, A., Đorđević, N., Mitrić, M., Marković, S., Đorđević, K.,& Pavlović, V. B. (2017). Sintering of fly ash based composites with zeolite and bentonite addition for application in construction materials.
Science of SinteringInternational Institute for the Science of Sintering., 49(1), 23-37. 
https://doi.org/10.2298/SOS1701023T
Terzić A, Đorđević N, Mitrić M, Marković S, Đorđević K, Pavlović VB. Sintering of fly ash based composites with zeolite and bentonite addition for application in construction materials. Science of Sintering. 2017;49(1):23-37
3
8
9

Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique

Obradović, Nina; Đorđević, Nataša; Filipović, Suzana; Kosanović, Darko; Pavlović, Vladimir B.; Olćan, Dragan; Đorđević, Antonije; Kachlik, Martin; Maca, Karel

(Insternational Institute for the Science of Sintering, 2016)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/15996
AB  - Cordierite-based ceramic materials are attracting much interest for their various applications in industry, for manufacturing multilayer circuit boards, catalytic converters, filters, thermal insulation, kiln furniture, components of portable electronic devices, etc. In order to reduce production costs and modify cordierite-based materials, mechanical activation can be used. In this study, microstructural and electrical properties of mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for the time periods from 0 to 160 min. Morphological investigations have been performed on the obtained powders. The effects of activation and two-step sintering process on microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of time of mechanical treatment.
PB  - Insternational Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique
SP  - 157
EP  - 165
VL  - 48
IS  - 2
DO  - 10.2298/SOS1602157O
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Filipović, Suzana and Kosanović, Darko and Pavlović, Vladimir B. and Olćan, Dragan and Đorđević, Antonije and Kachlik, Martin and Maca, Karel",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/15996",
abstract = "Cordierite-based ceramic materials are attracting much interest for their various applications in industry, for manufacturing multilayer circuit boards, catalytic converters, filters, thermal insulation, kiln furniture, components of portable electronic devices, etc. In order to reduce production costs and modify cordierite-based materials, mechanical activation can be used. In this study, microstructural and electrical properties of mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for the time periods from 0 to 160 min. Morphological investigations have been performed on the obtained powders. The effects of activation and two-step sintering process on microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of time of mechanical treatment.",
publisher = "Insternational Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique",
pages = "157-165",
volume = "48",
number = "2",
doi = "10.2298/SOS1602157O"
}
Obradović, N., Đorđević, N., Filipović, S., Kosanović, D., Pavlović, V. B., Olćan, D., Đorđević, A., Kachlik, M.,& Maca, K. (2016). Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique.
Science of SinteringInsternational Institute for the Science of Sintering., 48(2), 157-165. 
https://doi.org/10.2298/SOS1602157O
Obradović N, Đorđević N, Filipović S, Kosanović D, Pavlović VB, Olćan D, Đorđević A, Kachlik M, Maca K. Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique. Science of Sintering. 2016;48(2):157-165
6
11
12

Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique

Obradović, Nina; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Pavlović, Vladimir B.; Olćan, Dragan; Đorđević, Antonije; Kachlik, Martin; Maca, Karel

(2016)

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/2314
AB  - Cordierite-based ceramic materials are attracting much interest for their various applications in industry, for manufacturing multilayer circuit boards, catalytic converters, filters, thermal insulation, kiln furniture, components of portable electronic devices, etc. In order to reduce production costs and modify cordierite-based materials, mechanical activation can be used. In this study, microstructural and electrical properties of mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for the time periods from 0 to 160 min. Morphological investigations have been performed on the obtained powders. The effects of activation and two-step sintering process on microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of time of mechanical treatment.
T2  - Science of Sintering
T1  - Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique
SP  - 157
EP  - 165
VL  - 48
IS  - 2
DO  - 10.2298/SOS1602157O
ER  - 
@article{
author = "Obradović, Nina and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Pavlović, Vladimir B. and Olćan, Dragan and Đorđević, Antonije and Kachlik, Martin and Maca, Karel",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/2314",
abstract = "Cordierite-based ceramic materials are attracting much interest for their various applications in industry, for manufacturing multilayer circuit boards, catalytic converters, filters, thermal insulation, kiln furniture, components of portable electronic devices, etc. In order to reduce production costs and modify cordierite-based materials, mechanical activation can be used. In this study, microstructural and electrical properties of mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for the time periods from 0 to 160 min. Morphological investigations have been performed on the obtained powders. The effects of activation and two-step sintering process on microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of time of mechanical treatment.",
journal = "Science of Sintering",
title = "Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique",
pages = "157-165",
volume = "48",
number = "2",
doi = "10.2298/SOS1602157O"
}
Obradović, N., Filipović, S., Đorđević, N., Kosanović, D., Pavlović, V. B., Olćan, D., Đorđević, A., Kachlik, M.,& Maca, K. (2016). Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique.
Science of Sintering, 48(2), 157-165. 
https://doi.org/10.2298/SOS1602157O
Obradović N, Filipović S, Đorđević N, Kosanović D, Pavlović VB, Olćan D, Đorđević A, Kachlik M, Maca K. Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique. Science of Sintering. 2016;48(2):157-165
6
11
12

Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics

Obradović, Nina; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Marković, Smilja; Pavlović, Vladimir B.; Olćan, Dragan; Đorđević, Antonije; Kachlik, Martin; Maca, Karel

(Elsevier, 2016)

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/2322
AB  - The mechanical activation can help reduce production costs and modify cordierite-based materials. In this study, the structure and electrical properties of the mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for time periods ranging from 0 to 160 min. Structural investigations were performed on the obtained powders. The effects of activation and a two-step sintering process on the microstructure and crystal structure were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The thermal stability was analyzed using DTA. Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of the time of mechanical treatment.
PB  - Elsevier
T2  - Ceramics International
T1  - Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics
SP  - 13909
EP  - 13918
VL  - 42
IS  - 12
DO  - 10.1016/j.ceramint.2016.05.201
ER  - 
@article{
author = "Obradović, Nina and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Marković, Smilja and Pavlović, Vladimir B. and Olćan, Dragan and Đorđević, Antonije and Kachlik, Martin and Maca, Karel",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/2322",
abstract = "The mechanical activation can help reduce production costs and modify cordierite-based materials. In this study, the structure and electrical properties of the mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for time periods ranging from 0 to 160 min. Structural investigations were performed on the obtained powders. The effects of activation and a two-step sintering process on the microstructure and crystal structure were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The thermal stability was analyzed using DTA. Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of the time of mechanical treatment.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics",
pages = "13909-13918",
volume = "42",
number = "12",
doi = "10.1016/j.ceramint.2016.05.201"
}
Obradović, N., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Pavlović, V. B., Olćan, D., Đorđević, A., Kachlik, M.,& Maca, K. (2016). Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics.
Ceramics InternationalElsevier., 42(12), 13909-13918. 
https://doi.org/10.1016/j.ceramint.2016.05.201
Obradović N, Filipović S, Đorđević N, Kosanović D, Marković S, Pavlović VB, Olćan D, Đorđević A, Kachlik M, Maca K. Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics. Ceramics International. 2016;42(12):13909-13918
17
14
17

Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA

Obradović, Nina; Đorđević, Nataša; Filipović, Suzana; Marković, Smilja; Kosanović, Darko; Mitrić, Miodrag; Pavlović, Vladimir B.

(Springer, 2016)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Filipović, Suzana
AU  - Marković, Smilja
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/15995
AB  - Since cordierite, 2MgO·2Al2O3·5SiO2 (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 °C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissinger’s equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 °C, comparing to the literature data.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA
SP  - 667
EP  - 673
VL  - 124
IS  - 2
DO  - 10.1007/s10973-015-5132-9
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Filipović, Suzana and Marković, Smilja and Kosanović, Darko and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/15995",
abstract = "Since cordierite, 2MgO·2Al2O3·5SiO2 (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 °C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissinger’s equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 °C, comparing to the literature data.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA",
pages = "667-673",
volume = "124",
number = "2",
doi = "10.1007/s10973-015-5132-9"
}
Obradović, N., Đorđević, N., Filipović, S., Marković, S., Kosanović, D., Mitrić, M.,& Pavlović, V. B. (2016). Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA.
Journal of Thermal Analysis and CalorimetrySpringer., 124(2), 667-673. 
https://doi.org/10.1007/s10973-015-5132-9
Obradović N, Đorđević N, Filipović S, Marković S, Kosanović D, Mitrić M, Pavlović VB. Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA. Journal of Thermal Analysis and Calorimetry. 2016;124(2):667-673
5
6
7

Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2

Đorđević, Nataša; Obradović, Nina; Filipović, Suzana; Kosanović, Darko; Marković, Smilja; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2016)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/894
AB  - Cordierite 2MgO+2Al2O3+5SiO2 is frequently used ceramic material, that is commonly used as a carrier of electrical components due to its low dielectric constant (~ 5), and low temperature thermal expansion coefficient (20•10-7 ºC-1). In order to accelerate the process of sintering, 5.00 mass% TeO2 was added to the starting mixtures. System was tested in two parallel mixtures, one with no added additives, and the other one with TeO2. The mechanical activation of the both mixtures was performed in a high-energy ball mill in time intervals from 0 to 40 min with ball to powder mass ratio 1:40. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders as well as microstructures was analyzed by the means of X-ray diffraction method and SEM.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
T1  - Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2
SP  - 75
EP  - 75
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana and Kosanović, Darko and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/894",
abstract = "Cordierite 2MgO+2Al2O3+5SiO2 is frequently used ceramic material, that is commonly used as a carrier of electrical components due to its low dielectric constant (~ 5), and low temperature thermal expansion coefficient (20•10-7 ºC-1). In order to accelerate the process of sintering, 5.00 mass% TeO2 was added to the starting mixtures. System was tested in two parallel mixtures, one with no added additives, and the other one with TeO2. The mechanical activation of the both mixtures was performed in a high-energy ball mill in time intervals from 0 to 40 min with ball to powder mass ratio 1:40. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders as well as microstructures was analyzed by the means of X-ray diffraction method and SEM.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016",
title = "Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2",
pages = "75-75"
}
Đorđević, N., Obradović, N., Filipović, S., Kosanović, D., Marković, S., Mitrić, M.,& Pavlović, V. B. (2016). Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2.
Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016Belgrade : Materials Research Society of Serbia., null, 75-75. 
Đorđević N, Obradović N, Filipović S, Kosanović D, Marković S, Mitrić M, Pavlović VB. Influence of mechanical activation on the MgO-Al2O3-SiO2 system with TeO2. Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016. 2016;:75-75

Correlation between crystal structure and thermal stability of fire protection coating

Obradović, Nina; Đorđević, Nataša; Marković, Smilja; Marković, Marija; Mitrić, Miodrag

(Belgrade : Serbian Ceramic Society, 2015)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Marković, Smilja
AU  - Marković, Marija
AU  - Mitrić, Miodrag
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/765
AB  - Fire protection coatings on steel constructions for outdoor conditions on the basis of organic solutions have been analyzed. The first layer of coating is corrosion protection, alkyd paint „PROTHERM STEEL PRIMEPOX“ manufactorer „ITALVIS PROTECT“ Italy. The second layer of coating is an expanding coat for outdoor conditions „PROTHERM STEEL (EXT)“ solvent-bazed, „AMONNFIRE“ Italy. The third layer is final colors for metal „AMOTHERM STEEL TOP PU SB“ „AMONNFIRE“ Italy. XRD, DTA/TG and FTIR methods were used for sample characterization. It was found that primary and outer layer had very good adhesion. The second layer, for fire protection possesses 2.5 mass % humidity, which resulted in decrease of adhesion. XRD and FTIR analysis showed that those materials are adequate materials for fire protection up to 1000°C. Principles of fire protection are based on chemical reaction that are taking place in the temperature range 400-700°C.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Correlation between crystal structure and thermal stability of fire protection coating
SP  - 86
EP  - 86
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Marković, Smilja and Marković, Marija and Mitrić, Miodrag",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/765",
abstract = "Fire protection coatings on steel constructions for outdoor conditions on the basis of organic solutions have been analyzed. The first layer of coating is corrosion protection, alkyd paint „PROTHERM STEEL PRIMEPOX“ manufactorer „ITALVIS PROTECT“ Italy. The second layer of coating is an expanding coat for outdoor conditions „PROTHERM STEEL (EXT)“ solvent-bazed, „AMONNFIRE“ Italy. The third layer is final colors for metal „AMOTHERM STEEL TOP PU SB“ „AMONNFIRE“ Italy. XRD, DTA/TG and FTIR methods were used for sample characterization. It was found that primary and outer layer had very good adhesion. The second layer, for fire protection possesses 2.5 mass % humidity, which resulted in decrease of adhesion. XRD and FTIR analysis showed that those materials are adequate materials for fire protection up to 1000°C. Principles of fire protection are based on chemical reaction that are taking place in the temperature range 400-700°C.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Correlation between crystal structure and thermal stability of fire protection coating",
pages = "86-86"
}
Obradović, N., Đorđević, N., Marković, S., Marković, M.,& Mitrić, M. (2015). Correlation between crystal structure and thermal stability of fire protection coating.
Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, BelgradeBelgrade : Serbian Ceramic Society., null, 86-86. 
Obradović N, Đorđević N, Marković S, Marković M, Mitrić M. Correlation between crystal structure and thermal stability of fire protection coating. Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade. 2015;:86-86

The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics

Obradović, Nina; Đorđević, Nataša; Peleš, Adriana; Filipović, Suzana; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : International Institute for the Science of Sintering, 2015)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Peleš, Adriana
AU  - Filipović, Suzana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/767
AB  - Due to its characteristics, cordierite, 2MgO·2Al2O3·5SiO2, is a high-temperature ceramic material of a great scientific interest. Mechanical activation of the starting mixtures containing 5.00 mass% TiO2 was performed in a high-energy ball mill for 10 minutes. The compaction pressure varied from 0.5 to 6tcm-2 (49-588 MPa). The sintering process was performed at 1350ºC for four hours in the air atmosphere. The phase composition of the activated and sintered samples was analyzed using X-ray diffraction. Scanning electron microscopy was used to analyze the microstructure of both compacted and sintered samples. The authors have investigated the influence of compaction pressure on the sintered samples and their electrical properties.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics
SP  - 15
EP  - 22
VL  - 47
IS  - 1
DO  - 10.2298/SOS1501015O
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Peleš, Adriana and Filipović, Suzana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/767",
abstract = "Due to its characteristics, cordierite, 2MgO·2Al2O3·5SiO2, is a high-temperature ceramic material of a great scientific interest. Mechanical activation of the starting mixtures containing 5.00 mass% TiO2 was performed in a high-energy ball mill for 10 minutes. The compaction pressure varied from 0.5 to 6tcm-2 (49-588 MPa). The sintering process was performed at 1350ºC for four hours in the air atmosphere. The phase composition of the activated and sintered samples was analyzed using X-ray diffraction. Scanning electron microscopy was used to analyze the microstructure of both compacted and sintered samples. The authors have investigated the influence of compaction pressure on the sintered samples and their electrical properties.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics",
pages = "15-22",
volume = "47",
number = "1",
doi = "10.2298/SOS1501015O"
}
Obradović, N., Đorđević, N., Peleš, A., Filipović, S., Mitrić, M.,& Pavlović, V. B. (2015). The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics.
Science of SinteringBelgrade : International Institute for the Science of Sintering., 47(1), 15-22. 
https://doi.org/10.2298/SOS1501015O
Obradović N, Đorđević N, Peleš A, Filipović S, Mitrić M, Pavlović VB. The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics. Science of Sintering. 2015;47(1):15-22
3
7
6

Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA

Obradović, Nina; Đorđević, Nataša; Kosanović, Darko; Filipović, Suzana; Marković, Smilja; Mitrić, Miodrag; Pavlović, Vladimir B.

(Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry, 2015)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Filipović, Suzana
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/761
AB  - Cordierite, 2MgO•2Ah03•5Si02 (MAS), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 5.00 mass% Mo03 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill in time intervals from 0 to 160 minutes. In following, starting mixtures were sintered at 1300 °C for 2h. In order to determine the changes in the particle size distribution, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. Differential thermal analyses (DTA) and thermo-gravimetric (TG) analysis were used in order to determine characteristic temperatures. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system while heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive, has influence on sintering temperature which was decreased for about 150 °C.
PB  - Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry
C3  - 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts
T1  - Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA
SP  - 195
EP  - 195
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Kosanović, Darko and Filipović, Suzana and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/761",
abstract = "Cordierite, 2MgO•2Ah03•5Si02 (MAS), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 5.00 mass% Mo03 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill in time intervals from 0 to 160 minutes. In following, starting mixtures were sintered at 1300 °C for 2h. In order to determine the changes in the particle size distribution, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. Differential thermal analyses (DTA) and thermo-gravimetric (TG) analysis were used in order to determine characteristic temperatures. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system while heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive, has influence on sintering temperature which was decreased for about 150 °C.",
publisher = "Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry",
journal = "3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts",
title = "Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA",
pages = "195-195"
}
Obradović, N., Đorđević, N., Kosanović, D., Filipović, S., Marković, S., Mitrić, M.,& Pavlović, V. B. (2015). Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA.
3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of AbstractsLjubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry., null, 195-195. 
Obradović N, Đorđević N, Kosanović D, Filipović S, Marković S, Mitrić M, Pavlović VB. Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA. 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts. 2015;:195-195

Sintering of cordierite in the presence of MoO3 and crystallization analysis

Đorđević, Nataša; Obradović, Nina; Kosanović, Darko; Mitrić, Miodrag; Pavlović, Vladimr P.

(Belgrade : International Institute for the Science of Sintering, 2014)

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimr P.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/737
AB  - Cordierite (MAS) is difficult to sinter because of the very narrow sintering temperature range (1300-1400ºC). Because a low temperature process is desirable, it is necessary to find functional ads which can allow easier sintering process at lower temperature. The influence of MoO3 on the preparation process of cordierite ceramics was investigated. 2MgO-2Al2O3-5SiO2 was researched by sintering followed binary systems: MgO/MoO3, Al2O3/MoO3 and SiO2/MoO3 (all sintered at 850ºC and 1100ºC, sintering time 2h). Composition of these systems was 80 mass% of oxide and 20 mass% MoO3. The effects of sintering, the composition and morphology were followed by X-ray diffraction and SEM microscopy. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3, which is the significance information for further research. MAS ceramics were sintered with 20 mass% MoO3 at 1100ºC, 1200ºC and 1300ºC, during 2h. © 2014 Science of Sintering.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Sintering of cordierite in the presence of MoO3 and crystallization analysis
SP  - 307
EP  - 313
VL  - 46
IS  - 3
DO  - 10.2298/SOS1403307D
ER  - 
@article{
author = "Đorđević, Nataša and Obradović, Nina and Kosanović, Darko and Mitrić, Miodrag and Pavlović, Vladimr P.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/737",
abstract = "Cordierite (MAS) is difficult to sinter because of the very narrow sintering temperature range (1300-1400ºC). Because a low temperature process is desirable, it is necessary to find functional ads which can allow easier sintering process at lower temperature. The influence of MoO3 on the preparation process of cordierite ceramics was investigated. 2MgO-2Al2O3-5SiO2 was researched by sintering followed binary systems: MgO/MoO3, Al2O3/MoO3 and SiO2/MoO3 (all sintered at 850ºC and 1100ºC, sintering time 2h). Composition of these systems was 80 mass% of oxide and 20 mass% MoO3. The effects of sintering, the composition and morphology were followed by X-ray diffraction and SEM microscopy. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3, which is the significance information for further research. MAS ceramics were sintered with 20 mass% MoO3 at 1100ºC, 1200ºC and 1300ºC, during 2h. © 2014 Science of Sintering.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Sintering of cordierite in the presence of MoO3 and crystallization analysis",
pages = "307-313",
volume = "46",
number = "3",
doi = "10.2298/SOS1403307D"
}
Đorđević, N., Obradović, N., Kosanović, D., Mitrić, M.,& Pavlović, V. P. (2014). Sintering of cordierite in the presence of MoO3 and crystallization analysis.
Science of SinteringBelgrade : International Institute for the Science of Sintering., 46(3), 307-313. 
https://doi.org/10.2298/SOS1403307D
Đorđević N, Obradović N, Kosanović D, Mitrić M, Pavlović VP. Sintering of cordierite in the presence of MoO3 and crystallization analysis. Science of Sintering. 2014;46(3):307-313
3
3
3

Sintering of cordierite in the presence of MoO3 and crystallization analysis

Đorđević, Nataša; Obradović, Nina; Kosanović, Darko; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2014)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/766
AB  - Cordierite (MAS) is difficult to sinter because of the very narrow sintering temperature range (1300-1400ºC). Because a low temperature process is desirable, it is necessary to find functional ads which can allow easier sintering process at lower temperature. The influence of MoO3 on the preparation process of cordierite ceramics was investigated. 2MgO-2Al2O3-5SiO2 was researched by sintering followed binary systems: MgO/MoO3, Al2O3/MoO3 and SiO2/MoO3 (all sintered at 850ºC and 1100ºC, sintering time 2h). Composition of these systems was 80% of oxide and 20% MoO3. The effects of sintering, the composition and morphology were followed by X-ray diffraction, SEM microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3, which is the significance information for further research. MAS ceramics were sintered with 20% MoO3 at 1100ºC, 1200ºC and 1300ºC, during 2h.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
T1  - Sintering of cordierite in the presence of MoO3 and crystallization analysis
SP  - 68
EP  - 68
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Kosanović, Darko and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/766",
abstract = "Cordierite (MAS) is difficult to sinter because of the very narrow sintering temperature range (1300-1400ºC). Because a low temperature process is desirable, it is necessary to find functional ads which can allow easier sintering process at lower temperature. The influence of MoO3 on the preparation process of cordierite ceramics was investigated. 2MgO-2Al2O3-5SiO2 was researched by sintering followed binary systems: MgO/MoO3, Al2O3/MoO3 and SiO2/MoO3 (all sintered at 850ºC and 1100ºC, sintering time 2h). Composition of these systems was 80% of oxide and 20% MoO3. The effects of sintering, the composition and morphology were followed by X-ray diffraction, SEM microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3, which is the significance information for further research. MAS ceramics were sintered with 20% MoO3 at 1100ºC, 1200ºC and 1300ºC, during 2h.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts",
title = "Sintering of cordierite in the presence of MoO3 and crystallization analysis",
pages = "68-68"
}
Đorđević, N., Obradović, N., Kosanović, D., Mitrić, M.,& Pavlović, V. B. (2014). Sintering of cordierite in the presence of MoO3 and crystallization analysis.
The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of AbstractsBelgrade : Materials Research Society of Serbia., null, 68-68. 
Đorđević N, Obradović N, Kosanović D, Mitrić M, Pavlović VB. Sintering of cordierite in the presence of MoO3 and crystallization analysis. The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts. 2014;:68-68

Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-MoO3 System

Đorđević, Nataša; Obradović, Nina; Kosanović, Darko; Marković, Smilja; Mitrić, Miodrag

(Belgrade : Serbian Ceramic Society, 2014)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/613
AB  - Cordierite, 2MgO•2Al2O3•5SiO2 (MAS), is high-temperature ceramic material. Cordierite is commonly used material because of outstanding electrical properties, low temperature expansion coefficient and low dielectric constant. In order to accelerate the process of sintering, 5.00 mass% MoO3 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-160 minutes. All starting mixtures were sintered at 1100°C, 1200°C and 1300°C for 2h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. Differential thermal (DTA) and thermogravimetric (TG) analysis were used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation with additive MoO3, has influence on decreasing sintering temperatures for about 150°C.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014
T1  - Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-MoO3 System
SP  - 119
EP  - 119
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Kosanović, Darko and Marković, Smilja and Mitrić, Miodrag",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/613",
abstract = "Cordierite, 2MgO•2Al2O3•5SiO2 (MAS), is high-temperature ceramic material. Cordierite is commonly used material because of outstanding electrical properties, low temperature expansion coefficient and low dielectric constant. In order to accelerate the process of sintering, 5.00 mass% MoO3 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-160 minutes. All starting mixtures were sintered at 1100°C, 1200°C and 1300°C for 2h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. Differential thermal (DTA) and thermogravimetric (TG) analysis were used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation with additive MoO3, has influence on decreasing sintering temperatures for about 150°C.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014",
title = "Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-MoO3 System",
pages = "119-119"
}
Đorđević, N., Obradović, N., Kosanović, D., Marković, S.,& Mitrić, M. (2014). Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-MoO3 System.
Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014Belgrade : Serbian Ceramic Society., null, 119-119. 
Đorđević N, Obradović N, Kosanović D, Marković S, Mitrić M. Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-MoO3 System. Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014. 2014;:119-119

Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics

Peleš, Adriana; Đorđević, Nataša; Obradović, Nina; Tadić, N.; Pavlović, Vladimir B.

(Belgrade : International Institute for the Science of Sintering, 2013)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Tadić, N.
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/188
AB  - Mechanical activation is a commonly used and relatively fast and inexpensive procedure for sample preparation before the sintering process. Cordierite, a stoichiometric mixture of three different oxides (2MgO⋅2Al2O3⋅5SiO2) is a very attractive, widely used high-temperature ceramic material. The mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2, based on our recent investigation. The sintering process was performed at 1350oC for 2h and 4h in air atmosphere. X-ray diffraction was used to analyze the phase composition of non-activated and 80 min activated samples, sintered for 2 and 4h, respectively. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties. [Projekat Ministarstva nauke Republike Srbije, br. OI 172057]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics
SP  - 157
EP  - 164
VL  - 45
IS  - 2
DO  - 10.2298/SOS1302157P
ER  - 
@article{
author = "Peleš, Adriana and Đorđević, Nataša and Obradović, Nina and Tadić, N. and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/188",
abstract = "Mechanical activation is a commonly used and relatively fast and inexpensive procedure for sample preparation before the sintering process. Cordierite, a stoichiometric mixture of three different oxides (2MgO⋅2Al2O3⋅5SiO2) is a very attractive, widely used high-temperature ceramic material. The mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2, based on our recent investigation. The sintering process was performed at 1350oC for 2h and 4h in air atmosphere. X-ray diffraction was used to analyze the phase composition of non-activated and 80 min activated samples, sintered for 2 and 4h, respectively. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties. [Projekat Ministarstva nauke Republike Srbije, br. OI 172057]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics",
pages = "157-164",
volume = "45",
number = "2",
doi = "10.2298/SOS1302157P"
}
Peleš, A., Đorđević, N., Obradović, N., Tadić, N.,& Pavlović, V. B. (2013). Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics.
Science of SinteringBelgrade : International Institute for the Science of Sintering., 45(2), 157-164. 
https://doi.org/10.2298/SOS1302157P
Peleš A, Đorđević N, Obradović N, Tadić N, Pavlović VB. Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics. Science of Sintering. 2013;45(2):157-164
4
7
5

Influence of MoO3 on sintering temperature of mechanically activated MgO-Al2O3-SiO2 system

Đorđević, Nataša; Obradović, Nina; Radosavljević Mihajlović, Ana; Jokić, Bojan; Filipović, Suzana; Mitrić, Miodrag; Marković, Smilja

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Radosavljević Mihajlović, Ana
AU  - Jokić, Bojan
AU  - Filipović, Suzana
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/417
AB  - Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% MoO3 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered samples was analyzed by the X-ray diffraction method. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions. Sintering process was performed in air at 1200oC for 2h.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Influence of MoO3 on sintering temperature of mechanically activated MgO-Al2O3-SiO2 system
SP  - 40
EP  - 40
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Radosavljević Mihajlović, Ana and Jokić, Bojan and Filipović, Suzana and Mitrić, Miodrag and Marković, Smilja",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/417",
abstract = "Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% MoO3 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered samples was analyzed by the X-ray diffraction method. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions. Sintering process was performed in air at 1200oC for 2h.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Influence of MoO3 on sintering temperature of mechanically activated MgO-Al2O3-SiO2 system",
pages = "40-40"
}
Đorđević, N., Obradović, N., Radosavljević Mihajlović, A., Jokić, B., Filipović, S., Mitrić, M.,& Marković, S. (2013). Influence of MoO3 on sintering temperature of mechanically activated MgO-Al2O3-SiO2 system.
Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, BelgradeBelgrade : Serbian Ceramic Society., null, 40-40. 
Đorđević N, Obradović N, Radosavljević Mihajlović A, Jokić B, Filipović S, Mitrić M, Marković S. Influence of MoO3 on sintering temperature of mechanically activated MgO-Al2O3-SiO2 system. Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade. 2013;:40-40

Influence of one activated component on the sintering process of three phase system

Obradović, Nina; Peleš, Adriana; Đorđević, Nataša; Marković, Smilja; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Obradović, Nina
AU  - Peleš, Adriana
AU  - Đorđević, Nataša
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/402
AB  - According to its low temperature thermal expansion coefficient, low dielectric constant, also good mechanical properties, cordierite, 2MgO×2Al2O3×5SiO2, represents a very attractive hightemperature ceramic material. In this study, cordierite was prepared by solid state reaction of the MgO, Al2O3 and SiO2 mixture. One of the components from the mixture, SiO2, was mechanically activated in a high energy ball mill during 5 and 10 minutes. The applied pressure before the sintering process was 2 t/cm2. Sintering process of mixtures containing non-activated and activated SiO2 powder was performed at 1350 oC for 4h in the air atmosphere. The phase composition of starting oxides and sintered samples was analyzed by the X-ray diffraction method. Particle size analysis was performed to investigate the differences between starting components. Scanning electron microscopy was done to analyze the microstructure of both components and sintered samples. This paper investigates the influence of one mechanically activated SiO2 component on the densities of green bodies as well as on the sintered samples, along with electrical properties of cordierite ceramics.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Influence of one activated component on the sintering process of three phase system
SP  - 103
EP  - 103
ER  - 
@conference{
author = "Obradović, Nina and Peleš, Adriana and Đorđević, Nataša and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/402",
abstract = "According to its low temperature thermal expansion coefficient, low dielectric constant, also good mechanical properties, cordierite, 2MgO×2Al2O3×5SiO2, represents a very attractive hightemperature ceramic material. In this study, cordierite was prepared by solid state reaction of the MgO, Al2O3 and SiO2 mixture. One of the components from the mixture, SiO2, was mechanically activated in a high energy ball mill during 5 and 10 minutes. The applied pressure before the sintering process was 2 t/cm2. Sintering process of mixtures containing non-activated and activated SiO2 powder was performed at 1350 oC for 4h in the air atmosphere. The phase composition of starting oxides and sintered samples was analyzed by the X-ray diffraction method. Particle size analysis was performed to investigate the differences between starting components. Scanning electron microscopy was done to analyze the microstructure of both components and sintered samples. This paper investigates the influence of one mechanically activated SiO2 component on the densities of green bodies as well as on the sintered samples, along with electrical properties of cordierite ceramics.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Influence of one activated component on the sintering process of three phase system",
pages = "103-103"
}
Obradović, N., Peleš, A., Đorđević, N., Marković, S., Mitrić, M.,& Pavlović, V. B. (2013). Influence of one activated component on the sintering process of three phase system.
The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of AbstractsBelgrade : Materials Research Society of Serbia., null, 103-103. 
Obradović N, Peleš A, Đorđević N, Marković S, Mitrić M, Pavlović VB. Influence of one activated component on the sintering process of three phase system. The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:103-103

Influence of MoO3 on cordierite ceramics sintering and crystallization

Đorđević, Nataša; Mihajlović, A.; Peleš, Adriana; Obradović, Nina; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Mihajlović, A.
AU  - Peleš, Adriana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/389
AB  - The influence of MoO3 on the process of cordierite ceramics preparation, 2MgO-2Al2O3-5SiO2 (MAS) was researched by sintering followed binary systems: MgO/MoO3 (sintered at 850 ºC and 1000 ºC), Al2O3/Bi2O3 and SiO2/Bi2O3 (sintered at 850 ºC and 1000 ºC). Composition of these systems was 80 % of oxide and 20 % MoO3. The effects of sintering, the composition and morphology were followed by x-ray diffraction, scanning electron microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3. The following research is planned to investigate the effect of 5 % mass of MoO3 on the electrical properties of cordierite ceramics.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Influence of MoO3 on cordierite ceramics sintering and crystallization
SP  - 103
EP  - 103
ER  - 
@conference{
author = "Đorđević, Nataša and Mihajlović, A. and Peleš, Adriana and Obradović, Nina and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/389",
abstract = "The influence of MoO3 on the process of cordierite ceramics preparation, 2MgO-2Al2O3-5SiO2 (MAS) was researched by sintering followed binary systems: MgO/MoO3 (sintered at 850 ºC and 1000 ºC), Al2O3/Bi2O3 and SiO2/Bi2O3 (sintered at 850 ºC and 1000 ºC). Composition of these systems was 80 % of oxide and 20 % MoO3. The effects of sintering, the composition and morphology were followed by x-ray diffraction, scanning electron microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3. The following research is planned to investigate the effect of 5 % mass of MoO3 on the electrical properties of cordierite ceramics.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Influence of MoO3 on cordierite ceramics sintering and crystallization",
pages = "103-103"
}
Đorđević, N., Mihajlović, A., Peleš, A., Obradović, N.,& Pavlović, V. B. (2013). Influence of MoO3 on cordierite ceramics sintering and crystallization.
The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of AbstractsBelgrade : Materials Research Society of Serbia., null, 103-103. 
Đorđević N, Mihajlović A, Peleš A, Obradović N, Pavlović VB. Influence of MoO3 on cordierite ceramics sintering and crystallization. The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:103-103

Density and electrical properties of cordierite based ceramics as function of compaction pressure

Obradović, Nina; Đorđević, Nataša; Labus, Nebojša; Peleš, Adriana; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Labus, Nebojša
AU  - Peleš, Adriana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/416
AB  - Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Density and electrical properties of cordierite based ceramics as function of compaction pressure
SP  - 39
EP  - 39
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Labus, Nebojša and Peleš, Adriana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/416",
abstract = "Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Density and electrical properties of cordierite based ceramics as function of compaction pressure",
pages = "39-39"
}
Obradović, N., Đorđević, N., Labus, N., Peleš, A., Mitrić, M.,& Pavlović, V. B. (2013). Density and electrical properties of cordierite based ceramics as function of compaction pressure.
Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, BelgradeBelgrade : Serbian Ceramic Society., null, 39-39. 
Obradović N, Đorđević N, Labus N, Peleš A, Mitrić M, Pavlović VB. Density and electrical properties of cordierite based ceramics as function of compaction pressure. Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade. 2013;:39-39

Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics

Obradović, Nina; Đorđević, Nataša; Peleš, Adriana; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade, 2012)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Peleš, Adriana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/525
AB  - Mechanical activation is widely used for sample preparation before the sintering process. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO_2Al2O3_5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6 t/cm2. Differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Sintering process was performed at 1350 °C for 4 h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze both compacted and sintered sample microstructure. This paper deals with the influence of compaction pressure on the densities of green bodies as well as on the sintered samples, along with electrical properties
PB  - Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
T1  - Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics
SP  - 61
EP  - 61
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Peleš, Adriana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/525",
abstract = "Mechanical activation is widely used for sample preparation before the sintering process. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO_2Al2O3_5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6 t/cm2. Differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Sintering process was performed at 1350 °C for 4 h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze both compacted and sintered sample microstructure. This paper deals with the influence of compaction pressure on the densities of green bodies as well as on the sintered samples, along with electrical properties",
publisher = "Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts",
title = "Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics",
pages = "61-61"
}
Obradović, N., Đorđević, N., Peleš, A., Mitrić, M.,& Pavlović, V. B. (2012). Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics.
Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of AbstractsBelgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade., null, 61-61. 
Obradović N, Đorđević N, Peleš A, Mitrić M, Pavlović VB. Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics. Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts. 2012;:61-61

Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema

Đorđević, Nataša; Obradović, Nina; Filipović, Suzana; Živojinović, Jelena; Mitrić, Miodrag; Marković, Smilja

(Beograd : Savez inženjera i tehničara Srbije, 2012)

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Živojinović, Jelena
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/463
AB  - U ovom radu je ispitivan uticaj mehaničke energije na strukturu i promene u mikrostrukturi sistema MgO-Al2O3-SiO2-TiO2. Utvrđeno je da mehanička energija pospešuje homogenizaciju polaznih komponenti, utiče na veličinu i oblik zrna praškastih materijala i podstiče promene u kristalnoj strukturi polaznih čestica, sto utiče na pojavu defekata u ispitivanom sistemu. Ove promene su utvrđene difraktometrijskom analizom, kao i PSA i DTA metodom.
AB  - In this paper the effects of mechanical activation on structural and microstructural changes of the system MgO-Al2O3-SiO2-TiO2 were analyzed. It was confirmed that mechanical activation led to the homogenization of powder particles, the comminuting of particles, and after this period, the introduced energy was used to induce changes in the crystal structure, which resulted in the emergence of defects, initially on the surface of the crystal lattice, and then inside.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika – Novi materijali
T1  - Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema
SP  - 329
EP  - 333
ER  - 
@article{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana and Živojinović, Jelena and Mitrić, Miodrag and Marković, Smilja",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/463",
abstract = "U ovom radu je ispitivan uticaj mehaničke energije na strukturu i promene u mikrostrukturi sistema MgO-Al2O3-SiO2-TiO2. Utvrđeno je da mehanička energija pospešuje homogenizaciju polaznih komponenti, utiče na veličinu i oblik zrna praškastih materijala i podstiče promene u kristalnoj strukturi polaznih čestica, sto utiče na pojavu defekata u ispitivanom sistemu. Ove promene su utvrđene difraktometrijskom analizom, kao i PSA i DTA metodom., In this paper the effects of mechanical activation on structural and microstructural changes of the system MgO-Al2O3-SiO2-TiO2 were analyzed. It was confirmed that mechanical activation led to the homogenization of powder particles, the comminuting of particles, and after this period, the introduced energy was used to induce changes in the crystal structure, which resulted in the emergence of defects, initially on the surface of the crystal lattice, and then inside.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika – Novi materijali",
title = "Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema",
pages = "329-333"
}
Đorđević, N., Obradović, N., Filipović, S., Živojinović, J., Mitrić, M.,& Marković, S. (2012). Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema.
Tehnika – Novi materijaliBeograd : Savez inženjera i tehničara Srbije., null, 329-333. 
Đorđević N, Obradović N, Filipović S, Živojinović J, Mitrić M, Marković S. Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema. Tehnika – Novi materijali. 2012;:329-333

Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System

Đorđević, Nataša; Obradović, Nina; Filipović, Suzana; Živojinović, Jelena; Mitrić, Miodrag; Marković, Smilja

(Belgrade : Serbian Ceramic Society, 2012)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Živojinović, Jelena
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/499
AB  - Cordierite, 2MgO2Al2O35SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% TiO2 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. XRD showed decrease in peaks intensities and no new phases. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions.
PB  - Belgrade : Serbian Ceramic Society
C3  - The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
T1  - Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System
SP  - 7
EP  - 7
ER  - 
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana and Živojinović, Jelena and Mitrić, Miodrag and Marković, Smilja",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/499",
abstract = "Cordierite, 2MgO2Al2O35SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% TiO2 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. XRD showed decrease in peaks intensities and no new phases. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts",
title = "Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System",
pages = "7-7"
}
Đorđević, N., Obradović, N., Filipović, S., Živojinović, J., Mitrić, M.,& Marković, S. (2012). Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System.
The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of AbstractsBelgrade : Serbian Ceramic Society., null, 7-7. 
Đorđević N, Obradović N, Filipović S, Živojinović J, Mitrić M, Marković S. Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System. The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts. 2012;:7-7

Electrical properties of mechanochemically activated cordierite ceramics

Đorđević, Nataša; Obradović, Nina; Filipović, Suzana

(Springer, 2012)

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Filipović, Suzana
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/461
AB  - Three-component oxide mixtures were prepared containing MgO, Al 2 O 3 and SiO 2 in a 2 : 2 : 5 ratio with addition of 10% Bi 2 O 3. The mixtures were mechanically activated in a range from 5 to 240 min in a mill with ceramic balls, and sintered in the range 1173–1573 K. In order to determine the structure transformations, sintered products were analyzed by the XRD method. The goal of the research was to find the possible correlation between process parameters and functional properties of the cordierite-based ceramic materials. Quantitative measures of the functional sample properties, capacity (C c ) and electrical resistance (R ρ), as well as of dielectric loss (tgδ) were used. The results obtained prove that there is a correlation between mechanical activation and properties of cordierite ceramics.
PB  - Springer
T2  - Powder Metallurgy and Metal Ceramics
T1  - Electrical properties of mechanochemically activated cordierite ceramics
SP  - 83
EP  - 86
VL  - 51
IS  - 1-2
DO  - 10.1007/s11106-012-9400-y
ER  - 
@article{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/461",
abstract = "Three-component oxide mixtures were prepared containing MgO, Al 2 O 3 and SiO 2 in a 2 : 2 : 5 ratio with addition of 10% Bi 2 O 3. The mixtures were mechanically activated in a range from 5 to 240 min in a mill with ceramic balls, and sintered in the range 1173–1573 K. In order to determine the structure transformations, sintered products were analyzed by the XRD method. The goal of the research was to find the possible correlation between process parameters and functional properties of the cordierite-based ceramic materials. Quantitative measures of the functional sample properties, capacity (C c ) and electrical resistance (R ρ), as well as of dielectric loss (tgδ) were used. The results obtained prove that there is a correlation between mechanical activation and properties of cordierite ceramics.",
publisher = "Springer",
journal = "Powder Metallurgy and Metal Ceramics",
title = "Electrical properties of mechanochemically activated cordierite ceramics",
pages = "83-86",
volume = "51",
number = "1-2",
doi = "10.1007/s11106-012-9400-y"
}
Đorđević, N., Obradović, N.,& Filipović, S. (2012). Electrical properties of mechanochemically activated cordierite ceramics.
Powder Metallurgy and Metal CeramicsSpringer., 51(1-2), 83-86. 
https://doi.org/10.1007/s11106-012-9400-y
Đorđević N, Obradović N, Filipović S. Electrical properties of mechanochemically activated cordierite ceramics. Powder Metallurgy and Metal Ceramics. 2012;51(1-2):83-86
1

Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive

Obradović, Nina; Đorđević, Nataša; Filipović, Suzana; Nikolić, N.; Kosanović, Darko; Mitrić, Miodrag; Marković, Smilja; Pavlović, Vladimir B.

(Elsevier, 2012)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Filipović, Suzana
AU  - Nikolić, N.
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/485
AB  - Due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO⋅2Al2O3⋅ 5SiO2, is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 2.50 mass% Bi2O3 has been added to the starting mixtures. Liquid phase sintering caused by the presence of bismuth-oxide lowers the temperature of cordierite formation. The mechanical activation of the starting mixtures (0–56 min in vibro-mill) additionally lowers sintering temperatures. The sintering process was performed at 1200, 1300, 1350 and 1400 °C, for 2 h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered materials was analyzed by the X-ray diffraction method. Furthermore, scanning electron microscopy (SEM) was used in the analysis of the powder morphology.
PB  - Elsevier
T2  - Powder Technology
T1  - Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive
SP  - 157
EP  - 161
DO  - 10.1016/j.powtec.2011.12.012
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Filipović, Suzana and Nikolić, N. and Kosanović, Darko and Mitrić, Miodrag and Marković, Smilja and Pavlović, Vladimir B.",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/485",
abstract = "Due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO⋅2Al2O3⋅ 5SiO2, is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 2.50 mass% Bi2O3 has been added to the starting mixtures. Liquid phase sintering caused by the presence of bismuth-oxide lowers the temperature of cordierite formation. The mechanical activation of the starting mixtures (0–56 min in vibro-mill) additionally lowers sintering temperatures. The sintering process was performed at 1200, 1300, 1350 and 1400 °C, for 2 h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered materials was analyzed by the X-ray diffraction method. Furthermore, scanning electron microscopy (SEM) was used in the analysis of the powder morphology.",
publisher = "Elsevier",
journal = "Powder Technology",
title = "Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive",
pages = "157-161",
doi = "10.1016/j.powtec.2011.12.012"
}
Obradović, N., Đorđević, N., Filipović, S., Nikolić, N., Kosanović, D., Mitrić, M., Marković, S.,& Pavlović, V. B. (2012). Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive.
Powder TechnologyElsevier., null, 157-161. 
https://doi.org/10.1016/j.powtec.2011.12.012
Obradović N, Đorđević N, Filipović S, Nikolić N, Kosanović D, Mitrić M, Marković S, Pavlović VB. Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive. Powder Technology. 2012;:157-161
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