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Ministry of Education, Youth and Sports (MEYS) of Czech Republic - CEITEC 2020 [LQ1601]

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Ministry of Education, Youth and Sports (MEYS) of Czech Republic - CEITEC 2020 [LQ1601]

Authors

Publications

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

Casas-Luna, Mariano; Torres-Rodríguez, Jorge Alberto; Valdés-Martínez, Omar Uriel; Obradović, Nina; Slámečka, Karel; Maca, Karel; Kaiser, Jozef; Montúfar, Edgar B.; Čelko, Ladislav

(Elsevier, 2020)

TY  - JOUR
AU  - Casas-Luna, Mariano
AU  - Torres-Rodríguez, Jorge Alberto
AU  - Valdés-Martínez, Omar Uriel
AU  - Obradović, Nina
AU  - Slámečka, Karel
AU  - Maca, Karel
AU  - Kaiser, Jozef
AU  - Montúfar, Edgar B.
AU  - Čelko, Ladislav
PY  - 2020
UR  - https://linkinghub.elsevier.com/retrieve/pii/S027288421933620X
UR  - http://dais.sanu.ac.rs/123456789/6942
AB  - Wollastonite (CaSiO3) based porous structures are useful in a wide range of applications including catalysis. Furthermore, the use of additive manufac…
PB  - Elsevier
T2  - Ceramics International
T1  - Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior
SP  - 8853
EP  - 8861
VL  - 46
IS  - 7
DO  - 10.1016/j.ceramint.2019.12.130
ER  - 
@article{
author = "Casas-Luna, Mariano and Torres-Rodríguez, Jorge Alberto and Valdés-Martínez, Omar Uriel and Obradović, Nina and Slámečka, Karel and Maca, Karel and Kaiser, Jozef and Montúfar, Edgar B. and Čelko, Ladislav",
year = "2020",
url = "https://linkinghub.elsevier.com/retrieve/pii/S027288421933620X, http://dais.sanu.ac.rs/123456789/6942",
abstract = "Wollastonite (CaSiO3) based porous structures are useful in a wide range of applications including catalysis. Furthermore, the use of additive manufac…",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior",
pages = "8853-8861",
volume = "46",
number = "7",
doi = "10.1016/j.ceramint.2019.12.130"
}
Casas-Luna, M., Torres-Rodríguez, J. A., Valdés-Martínez, O. U., Obradović, N., Slámečka, K., Maca, K., Kaiser, J., Montúfar, E. B.,& Čelko, L. (2020). Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior.
Ceramics InternationalElsevier., 46(7), 8853-8861. 
https://doi.org/10.1016/j.ceramint.2019.12.130
Casas-Luna M, Torres-Rodríguez JA, Valdés-Martínez OU, Obradović N, Slámečka K, Maca K, Kaiser J, Montúfar EB, Čelko L. Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior. Ceramics International. 2020;46(7):8853-8861
2
1
2

Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior

Casas-Luna, Mariano; Torres-Rodríguez, Jorge Alberto; Valdés-Martínez, Omar Uriel; Obradović, Nina; Slámečka, Karel; Maca, Karel; Kaiser, Jozef; Montúfar, Edgar B.; Čelko, Ladislav

(Elsevier, 2020)

TY  - JOUR
AU  - Casas-Luna, Mariano
AU  - Torres-Rodríguez, Jorge Alberto
AU  - Valdés-Martínez, Omar Uriel
AU  - Obradović, Nina
AU  - Slámečka, Karel
AU  - Maca, Karel
AU  - Kaiser, Jozef
AU  - Montúfar, Edgar B.
AU  - Čelko, Ladislav
PY  - 2020
UR  - https://linkinghub.elsevier.com/retrieve/pii/S027288421933620X
UR  - http://dais.sanu.ac.rs/123456789/8943
AB  - Wollastonite (CaSiO3) based porous structures are useful in a wide range of applications including catalysis. Furthermore, the use of additive manufac…
PB  - Elsevier
T2  - Ceramics International
T1  - Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior
SP  - 8853
EP  - 8861
VL  - 46
IS  - 7
DO  - 10.1016/j.ceramint.2019.12.130
ER  - 
@article{
author = "Casas-Luna, Mariano and Torres-Rodríguez, Jorge Alberto and Valdés-Martínez, Omar Uriel and Obradović, Nina and Slámečka, Karel and Maca, Karel and Kaiser, Jozef and Montúfar, Edgar B. and Čelko, Ladislav",
year = "2020",
url = "https://linkinghub.elsevier.com/retrieve/pii/S027288421933620X, http://dais.sanu.ac.rs/123456789/8943",
abstract = "Wollastonite (CaSiO3) based porous structures are useful in a wide range of applications including catalysis. Furthermore, the use of additive manufac…",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior",
pages = "8853-8861",
volume = "46",
number = "7",
doi = "10.1016/j.ceramint.2019.12.130"
}
Casas-Luna, M., Torres-Rodríguez, J. A., Valdés-Martínez, O. U., Obradović, N., Slámečka, K., Maca, K., Kaiser, J., Montúfar, E. B.,& Čelko, L. (2020). Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior.
Ceramics InternationalElsevier., 46(7), 8853-8861. 
https://doi.org/10.1016/j.ceramint.2019.12.130
Casas-Luna M, Torres-Rodríguez JA, Valdés-Martínez OU, Obradović N, Slámečka K, Maca K, Kaiser J, Montúfar EB, Čelko L. Robocasting of controlled porous CaSiO3–SiO2 structures: Architecture – Strength relationship and material catalytic behavior. Ceramics International. 2020;46(7):8853-8861
2
1
2

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

Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering

Obradović, Nina; Pavlović, Vera P.; Kachlik, Martin; Maca, Karel; Olćan, Dragan; Đorđević, Antonije; Tshantshapanyan, Ani; Vlahović, Branislav; Pavlović, Vladimir B.

(Taylor and Francis, 2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4557
AB  - Sintering of pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350°C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.
PB  - Taylor and Francis
T2  - Advances in Applied Ceramics
T1  - Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering
SP  - 241
EP  - 248
VL  - 118
IS  - 5
DO  - 10.1080/17436753.2018.1548150
ER  - 
@article{
author = "Obradović, Nina and Pavlović, Vera P. and Kachlik, Martin and Maca, Karel and Olćan, Dragan and Đorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4557",
abstract = "Sintering of pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350°C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.",
publisher = "Taylor and Francis",
journal = "Advances in Applied Ceramics",
title = "Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering",
pages = "241-248",
volume = "118",
number = "5",
doi = "10.1080/17436753.2018.1548150"
}
Obradović, N., Pavlović, V. P., Kachlik, M., Maca, K., Olćan, D., Đorđević, A., Tshantshapanyan, A., Vlahović, B.,& Pavlović, V. B. (2019). Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering.
Advances in Applied CeramicsTaylor and Francis., 118(5), 241-248. 
https://doi.org/10.1080/17436753.2018.1548150
Obradović N, Pavlović VP, Kachlik M, Maca K, Olćan D, Đorđević A, Tshantshapanyan A, Vlahović B, Pavlović VB. Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering. Advances in Applied Ceramics. 2019;118(5):241-248
3
3
3

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

Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics

Filipović, Suzana; Obradović, Nina; Pavlović, Vladimir B.; Mitrić, Miodrag; Đorđević, Antonije; Kachlik, Martin; Maca, Karel

(Elsevier, 2016)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Mitrić, Miodrag
AU  - Đorđević, Antonije
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/2310
AB  - The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in a planetary ball mill. Green bodies were formed by an isostatic pressure of 300 MPa. The sintering of these samples was done either by the Two-Step Sintering (TSS) approach or by conventional pressureless sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 °C for 30 min and the next step was performed at 1200 °C for 20 h. The density of the obtained samples after the two-step sintering reached almost 90% of the theoretical density (%TD). The second set of compacts was sintered at 1400 °C for 30 min in air. The samples without open porosity were post-sintered by the HIP at 1200 °C for 2 h in an argon atmosphere at a pressure of 200 MPa. The density significantly increased up to 96%TD. The differences between samples prepared by these two techniques were also analyzed by XRD and SEM. The lattice vibration spectra were obtained using Raman spectroscopy and they indicate a high degree of lattice disorder, as well as high values of the oxygen vacancy concentration. Electrical characteristic were established in the frequency range from 10 kHz to 10 GHz. The choice of the processing route had considerable influence on structural and physical properties of MgTiO3 ceramics.
PB  - Elsevier
T2  - Ceramics International
T1  - Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics
SP  - 9887
EP  - 9898
VL  - 42
IS  - 8
DO  - 10.1016/j.ceramint.2016.03.088
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Mitrić, Miodrag and Đorđević, Antonije and Kachlik, Martin and Maca, Karel",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/2310",
abstract = "The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in a planetary ball mill. Green bodies were formed by an isostatic pressure of 300 MPa. The sintering of these samples was done either by the Two-Step Sintering (TSS) approach or by conventional pressureless sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 °C for 30 min and the next step was performed at 1200 °C for 20 h. The density of the obtained samples after the two-step sintering reached almost 90% of the theoretical density (%TD). The second set of compacts was sintered at 1400 °C for 30 min in air. The samples without open porosity were post-sintered by the HIP at 1200 °C for 2 h in an argon atmosphere at a pressure of 200 MPa. The density significantly increased up to 96%TD. The differences between samples prepared by these two techniques were also analyzed by XRD and SEM. The lattice vibration spectra were obtained using Raman spectroscopy and they indicate a high degree of lattice disorder, as well as high values of the oxygen vacancy concentration. Electrical characteristic were established in the frequency range from 10 kHz to 10 GHz. The choice of the processing route had considerable influence on structural and physical properties of MgTiO3 ceramics.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics",
pages = "9887-9898",
volume = "42",
number = "8",
doi = "10.1016/j.ceramint.2016.03.088"
}
Filipović, S., Obradović, N., Pavlović, V. B., Mitrić, M., Đorđević, A., Kachlik, M.,& Maca, K. (2016). Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics.
Ceramics InternationalElsevier., 42(8), 9887-9898. 
https://doi.org/10.1016/j.ceramint.2016.03.088
Filipović S, Obradović N, Pavlović VB, Mitrić M, Đorđević A, Kachlik M, Maca K. Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics. Ceramics International. 2016;42(8):9887-9898
6
8
9

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
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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
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