TY  - JOUR
AU  - Nedeljković, Borivoje
AU  - Pavlović, Vladimir B.
AU  - Obradović, Nina
AU  - Mitrović, Nebojša S.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16179
AB  - The structural properties of a magnetically semi-hard near equiatomic FeCo-2wt%V (FeCoV) alloy produced by Powder Injection Moulding (PIM) (option by fine metal powder - Metal Injection Moulding (MIM) technology) were investigated in this paper. Starting granulate was prepared by mixing FeCoV powder with a low-viscosity binder. After injection, the green samples were first treated with a solvent and then thermally with the same aim of removing the binder. MIM technology was completed by high-temperature sintering for 3.5 hours at temperatures from 1370 OC to 1460 OC in a hydrogen atmosphere, which provides the necessary magnetic and mechanical characteristics. The influence of sintering temperature was investigated concerning the aspects of the processes of structural transformation by the methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The appearance of an intense diffraction peak of the α'-FeCo phase (crystal structure type B2) was registered for all investigated samples. Structural parameters particle size Dmax, Feret X, and Feret Y exhibit constant increase with increase of sintering temperature.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Structural features of near equiatomic FeCo-2V semi-hard magnetic alloy prepared by MIM technology
VL  - 55
DO  - 10.2298/SOS231024055N
UR  - https://hdl.handle.net/21.15107/rcub_dais_16179
ER  - 

@article{
author = "Nedeljković, Borivoje and Pavlović, Vladimir B. and Obradović, Nina and Mitrović, Nebojša S.",
year = "2023",
abstract = "The structural properties of a magnetically semi-hard near equiatomic FeCo-2wt%V (FeCoV) alloy produced by Powder Injection Moulding (PIM) (option by fine metal powder - Metal Injection Moulding (MIM) technology) were investigated in this paper. Starting granulate was prepared by mixing FeCoV powder with a low-viscosity binder. After injection, the green samples were first treated with a solvent and then thermally with the same aim of removing the binder. MIM technology was completed by high-temperature sintering for 3.5 hours at temperatures from 1370 OC to 1460 OC in a hydrogen atmosphere, which provides the necessary magnetic and mechanical characteristics. The influence of sintering temperature was investigated concerning the aspects of the processes of structural transformation by the methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The appearance of an intense diffraction peak of the α'-FeCo phase (crystal structure type B2) was registered for all investigated samples. Structural parameters particle size Dmax, Feret X, and Feret Y exhibit constant increase with increase of sintering temperature.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Structural features of near equiatomic FeCo-2V semi-hard magnetic alloy prepared by MIM technology",
volume = "55",
doi = "10.2298/SOS231024055N",
url = "https://hdl.handle.net/21.15107/rcub_dais_16179"
}

Nedeljković, B., Pavlović, V. B., Obradović, N.,& Mitrović, N. S.. (2023). Structural features of near equiatomic FeCo-2V semi-hard magnetic alloy prepared by MIM technology. in Science of Sintering
Belgrade : ETRAN., 55.
https://doi.org/10.2298/SOS231024055N
https://hdl.handle.net/21.15107/rcub_dais_16179

Nedeljković B, Pavlović VB, Obradović N, Mitrović NS. Structural features of near equiatomic FeCo-2V semi-hard magnetic alloy prepared by MIM technology. in Science of Sintering. 2023;55.
doi:10.2298/SOS231024055N
https://hdl.handle.net/21.15107/rcub_dais_16179 .

Nedeljković, Borivoje, Pavlović, Vladimir B., Obradović, Nina, Mitrović, Nebojša S., "Structural features of near equiatomic FeCo-2V semi-hard magnetic alloy prepared by MIM technology" in Science of Sintering, 55 (2023),
https://doi.org/10.2298/SOS231024055N .,
https://hdl.handle.net/21.15107/rcub_dais_16179 .

TY  - CONF
AU  - Nedeljković, Borivoje
AU  - Pavlović, Vladimir B.
AU  - Obradović, Nina
AU  - Mitrović, Nebojša S.
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13620
AB  - FeCoV alloys with high saturation magnetization and high Curie temperature, making them useful for high-temperature and power-dense applications (e. g. aviation device). In this study, we report the results of observing the structural properties of 49Fe49Co2V alloy produced by PIM / MIM technology. The starting granulate was prepared by mixing FeCoV powder with a low-viscosity binder. After injection, the raw “green” samples were first treated with a solvent and then thermally with the same aim of removing the binder. MIM technology is completed by high-temperature sintering of “brown” samples for 3.5 hours at temperatures from 1370 OC to 1460 OC in a hydrogen atmosphere, which provides the necessary magnetic and mechanical characteristics. Depending on the sintering temperature, structural parameters of particle size Dmax, Feret X, Feret Y were investigated and analysed.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
T1  - Structural properties of FeCoV alloys produced by PIM / MIM technology
SP  - 57
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_dais_13620
ER  - 

@conference{
author = "Nedeljković, Borivoje and Pavlović, Vladimir B. and Obradović, Nina and Mitrović, Nebojša S.",
year = "2022",
abstract = "FeCoV alloys with high saturation magnetization and high Curie temperature, making them useful for high-temperature and power-dense applications (e. g. aviation device). In this study, we report the results of observing the structural properties of 49Fe49Co2V alloy produced by PIM / MIM technology. The starting granulate was prepared by mixing FeCoV powder with a low-viscosity binder. After injection, the raw “green” samples were first treated with a solvent and then thermally with the same aim of removing the binder. MIM technology is completed by high-temperature sintering of “brown” samples for 3.5 hours at temperatures from 1370 OC to 1460 OC in a hydrogen atmosphere, which provides the necessary magnetic and mechanical characteristics. Depending on the sintering temperature, structural parameters of particle size Dmax, Feret X, Feret Y were investigated and analysed.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.",
title = "Structural properties of FeCoV alloys produced by PIM / MIM technology",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_dais_13620"
}

Nedeljković, B., Pavlović, V. B., Obradović, N.,& Mitrović, N. S.. (2022). Structural properties of FeCoV alloys produced by PIM / MIM technology. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
Belgrade : Serbian Ceramic Society., 57-57.
https://hdl.handle.net/21.15107/rcub_dais_13620

Nedeljković B, Pavlović VB, Obradović N, Mitrović NS. Structural properties of FeCoV alloys produced by PIM / MIM technology. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.. 2022;:57-57.
https://hdl.handle.net/21.15107/rcub_dais_13620 .

Nedeljković, Borivoje, Pavlović, Vladimir B., Obradović, Nina, Mitrović, Nebojša S., "Structural properties of FeCoV alloys produced by PIM / MIM technology" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022. (2022):57-57,
https://hdl.handle.net/21.15107/rcub_dais_13620 .

TY  - CONF
AU  - Nedeljković, Borivoje
AU  - Pavlović, Vladimir B.
AU  - Obradović, Nina
AU  - Mitrović, Nebojša S.
PY  - 2021
UR  - https://www.etran.rs/2021/wp-content/uploads/2021/08/PROGRAM_ETRAN_2021_final_b5_za_web.pdf
UR  - https://dais.sanu.ac.rs/123456789/11922
AB  - U radu su ispitivani strukturna svojstva legure 49Fe49Co2V proizvedene PIM/MIM tehnologijom, tako što je polazni granulat pripremljen mešanjem FeCoV praha sa niskoviskoznim vezivom. Nakon brizganja sirovi uzorci su najpre tretirani rastvaračem a zatim i termički s istim ciljem odstranjivanja
veziva. MIM tehnologija je završena visokotemperaturskim sinterovanjem tokom 3,5 sata na temperaturama od 1370 °C do 1460 °C u atmosferi vodonika, kojim se obezbedjuju potrebne magnetne i mehaničke karakteristike. Strukturna svojstva veličine čestica Dmax, Feret X, Feret Y su ispitivana u zavisnosti od temperature sinterovanja.
PB  - Belgrade : ETRAN
C3  - Zbornik apstrakta i program 65. konferencije ETRAN i 8. konferencije IcETRAN, Etno selo Stanišići, Republika Srpska, 8-10. septembra 2021. godine = Proceedings of Abstracts and Program 8th Conference IcETRAN in conjunction with the 65th ETRAN Conference, Etno village Stanišići, Republic of Srpska, Bosnia and Herzegovina
T1  - Ispitivanje strukturnih svojstava legure FeCoV metodom skenirajuće elektronske mikroskopije - SEM
SP  - 33
EP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_dais_11922
ER  - 

@conference{
author = "Nedeljković, Borivoje and Pavlović, Vladimir B. and Obradović, Nina and Mitrović, Nebojša S.",
year = "2021",
abstract = "U radu su ispitivani strukturna svojstva legure 49Fe49Co2V proizvedene PIM/MIM tehnologijom, tako što je polazni granulat pripremljen mešanjem FeCoV praha sa niskoviskoznim vezivom. Nakon brizganja sirovi uzorci su najpre tretirani rastvaračem a zatim i termički s istim ciljem odstranjivanja
veziva. MIM tehnologija je završena visokotemperaturskim sinterovanjem tokom 3,5 sata na temperaturama od 1370 °C do 1460 °C u atmosferi vodonika, kojim se obezbedjuju potrebne magnetne i mehaničke karakteristike. Strukturna svojstva veličine čestica Dmax, Feret X, Feret Y su ispitivana u zavisnosti od temperature sinterovanja.",
publisher = "Belgrade : ETRAN",
journal = "Zbornik apstrakta i program 65. konferencije ETRAN i 8. konferencije IcETRAN, Etno selo Stanišići, Republika Srpska, 8-10. septembra 2021. godine = Proceedings of Abstracts and Program 8th Conference IcETRAN in conjunction with the 65th ETRAN Conference, Etno village Stanišići, Republic of Srpska, Bosnia and Herzegovina",
title = "Ispitivanje strukturnih svojstava legure FeCoV metodom skenirajuće elektronske mikroskopije - SEM",
pages = "33-33",
url = "https://hdl.handle.net/21.15107/rcub_dais_11922"
}

Nedeljković, B., Pavlović, V. B., Obradović, N.,& Mitrović, N. S.. (2021). Ispitivanje strukturnih svojstava legure FeCoV metodom skenirajuće elektronske mikroskopije - SEM. in Zbornik apstrakta i program 65. konferencije ETRAN i 8. konferencije IcETRAN, Etno selo Stanišići, Republika Srpska, 8-10. septembra 2021. godine = Proceedings of Abstracts and Program 8th Conference IcETRAN in conjunction with the 65th ETRAN Conference, Etno village Stanišići, Republic of Srpska, Bosnia and Herzegovina
Belgrade : ETRAN., 33-33.
https://hdl.handle.net/21.15107/rcub_dais_11922

Nedeljković B, Pavlović VB, Obradović N, Mitrović NS. Ispitivanje strukturnih svojstava legure FeCoV metodom skenirajuće elektronske mikroskopije - SEM. in Zbornik apstrakta i program 65. konferencije ETRAN i 8. konferencije IcETRAN, Etno selo Stanišići, Republika Srpska, 8-10. septembra 2021. godine = Proceedings of Abstracts and Program 8th Conference IcETRAN in conjunction with the 65th ETRAN Conference, Etno village Stanišići, Republic of Srpska, Bosnia and Herzegovina. 2021;:33-33.
https://hdl.handle.net/21.15107/rcub_dais_11922 .

Nedeljković, Borivoje, Pavlović, Vladimir B., Obradović, Nina, Mitrović, Nebojša S., "Ispitivanje strukturnih svojstava legure FeCoV metodom skenirajuće elektronske mikroskopije - SEM" in Zbornik apstrakta i program 65. konferencije ETRAN i 8. konferencije IcETRAN, Etno selo Stanišići, Republika Srpska, 8-10. septembra 2021. godine = Proceedings of Abstracts and Program 8th Conference IcETRAN in conjunction with the 65th ETRAN Conference, Etno village Stanišići, Republic of Srpska, Bosnia and Herzegovina (2021):33-33,
https://hdl.handle.net/21.15107/rcub_dais_11922 .

TY  - CONF
AU  - Mitrović, Nebojša S.
AU  - Nedeljković, Borivoje
AU  - Obradović, Nina
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11901
AB  - MnZn ferrites are one of the most common soft magnetic materials for application in microelectronics as a material for microwave components (transformers, transducers, inductors, magnetic fluids, sensors,). MnZn ferrites attracted attention due to wide range of relative magnetic permeability values (from 103 to 104), high resistivity (consequently low magnetic losses) as well as high thermal stability (high saturation magnetic flux density at high temperatures (Bs > 0.4 T at 100 OC) and a relatively high Curie temperature of about 230 OC).Recently, a variety of technologies have been examined for MnZn ferrite production: powder/ceramic injection moulding (PIM/CIM), chemical co-precipitation method, conventional ceramic processing, sol-gel or microemulsion. In this study a toroidal samples of MnZn ferrites with dimensions appropriate for applications in electronic industry (i.e. microelectronics: inner diameter 3.5 mm, outer diameter 7 mm, height 2 mm) were investigated. Magnetic properties were measured by hysteresis graph (B-H curve at level of magnetic excitation up to 1 kA/m and at different frequencies from 5 Hz to 10 kHz). Relative magnetic permeability as well as magnetic power (active) losses was analyzed as frequency dependent. Very stable maximum magnetic permeability was observed for magnetic field of 200 A/m in the frequency range from 50 Hz (μr ≈ 480) to 10 kHz (μr ≈ 450). Active power referred to unit mass of about 30 W/kg was recorded at frequency of 1 kHz (@ 280 mT). As the hysteresis losses are proportionally to the frequency (~ f) and eddy-current losses are proportionally to the square of frequency (~ f2) it was performed separation between these two components from total magnetic power (active) losses. Numerical fitting of this functionality on frequency were performed and analysed. The results obtained were compared with the catalogue data for other MnZn ferrite components for applications in electronics.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Magnetic features of MnZn ferrite for electronic applications
SP  - 59
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_dais_11901
ER  - 

@conference{
author = "Mitrović, Nebojša S. and Nedeljković, Borivoje and Obradović, Nina",
year = "2021",
abstract = "MnZn ferrites are one of the most common soft magnetic materials for application in microelectronics as a material for microwave components (transformers, transducers, inductors, magnetic fluids, sensors,). MnZn ferrites attracted attention due to wide range of relative magnetic permeability values (from 103 to 104), high resistivity (consequently low magnetic losses) as well as high thermal stability (high saturation magnetic flux density at high temperatures (Bs > 0.4 T at 100 OC) and a relatively high Curie temperature of about 230 OC).Recently, a variety of technologies have been examined for MnZn ferrite production: powder/ceramic injection moulding (PIM/CIM), chemical co-precipitation method, conventional ceramic processing, sol-gel or microemulsion. In this study a toroidal samples of MnZn ferrites with dimensions appropriate for applications in electronic industry (i.e. microelectronics: inner diameter 3.5 mm, outer diameter 7 mm, height 2 mm) were investigated. Magnetic properties were measured by hysteresis graph (B-H curve at level of magnetic excitation up to 1 kA/m and at different frequencies from 5 Hz to 10 kHz). Relative magnetic permeability as well as magnetic power (active) losses was analyzed as frequency dependent. Very stable maximum magnetic permeability was observed for magnetic field of 200 A/m in the frequency range from 50 Hz (μr ≈ 480) to 10 kHz (μr ≈ 450). Active power referred to unit mass of about 30 W/kg was recorded at frequency of 1 kHz (@ 280 mT). As the hysteresis losses are proportionally to the frequency (~ f) and eddy-current losses are proportionally to the square of frequency (~ f2) it was performed separation between these two components from total magnetic power (active) losses. Numerical fitting of this functionality on frequency were performed and analysed. The results obtained were compared with the catalogue data for other MnZn ferrite components for applications in electronics.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Magnetic features of MnZn ferrite for electronic applications",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_dais_11901"
}

Mitrović, N. S., Nedeljković, B.,& Obradović, N.. (2021). Magnetic features of MnZn ferrite for electronic applications. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 59-59.
https://hdl.handle.net/21.15107/rcub_dais_11901

Mitrović NS, Nedeljković B, Obradović N. Magnetic features of MnZn ferrite for electronic applications. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:59-59.
https://hdl.handle.net/21.15107/rcub_dais_11901 .

Mitrović, Nebojša S., Nedeljković, Borivoje, Obradović, Nina, "Magnetic features of MnZn ferrite for electronic applications" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):59-59,
https://hdl.handle.net/21.15107/rcub_dais_11901 .

TY  - JOUR
AU  - Nedeljković, Borivoje
AU  - Mitrović, Nebojša
AU  - Orelj, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2342
AB  - In this study the characterization of FeCo-2V alloys toroidal samples produced by PIM/MIM technology was presented. The feedstock for metal injection molding (MIM) was prepared by mixing starting FeCoV powder with a low viscosity binder. Green samples were subjected to solvent debinding and subsequent thermal debinding followed by sintering. Sintering was performed during 3.5 hours from 1370°C to 1460°C in hydrogen atmosphere in order to attain the appropriate mechanical and magnetic properties. Microstructure, hardness HV10 and magnetic hysteresis B(H) were investigated as a function of sintering temperature. Optimum combination of functional properties was observed after sintering at temperature of 1370°C. In addition, magnetic properties were analyzed as frequency dependent and successfully simulated in operating frequency range from 5 Hz to 60 Hz.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Characterization of FeCoV alloy processed by PIM/MIM route
SP  - 299
EP  - 309
VL  - 49
IS  - 3
DO  - 10.2298/SOS1703299N
UR  - https://hdl.handle.net/21.15107/rcub_dais_2342
ER  - 

@article{
author = "Nedeljković, Borivoje and Mitrović, Nebojša and Orelj, Jelena and Obradović, Nina and Pavlović, Vladimir B.",
year = "2017",
abstract = "In this study the characterization of FeCo-2V alloys toroidal samples produced by PIM/MIM technology was presented. The feedstock for metal injection molding (MIM) was prepared by mixing starting FeCoV powder with a low viscosity binder. Green samples were subjected to solvent debinding and subsequent thermal debinding followed by sintering. Sintering was performed during 3.5 hours from 1370°C to 1460°C in hydrogen atmosphere in order to attain the appropriate mechanical and magnetic properties. Microstructure, hardness HV10 and magnetic hysteresis B(H) were investigated as a function of sintering temperature. Optimum combination of functional properties was observed after sintering at temperature of 1370°C. In addition, magnetic properties were analyzed as frequency dependent and successfully simulated in operating frequency range from 5 Hz to 60 Hz.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Characterization of FeCoV alloy processed by PIM/MIM route",
pages = "299-309",
volume = "49",
number = "3",
doi = "10.2298/SOS1703299N",
url = "https://hdl.handle.net/21.15107/rcub_dais_2342"
}

Nedeljković, B., Mitrović, N., Orelj, J., Obradović, N.,& Pavlović, V. B.. (2017). Characterization of FeCoV alloy processed by PIM/MIM route. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 49(3), 299-309.
https://doi.org/10.2298/SOS1703299N
https://hdl.handle.net/21.15107/rcub_dais_2342

Nedeljković B, Mitrović N, Orelj J, Obradović N, Pavlović VB. Characterization of FeCoV alloy processed by PIM/MIM route. in Science of Sintering. 2017;49(3):299-309.
doi:10.2298/SOS1703299N
https://hdl.handle.net/21.15107/rcub_dais_2342 .

Nedeljković, Borivoje, Mitrović, Nebojša, Orelj, Jelena, Obradović, Nina, Pavlović, Vladimir B., "Characterization of FeCoV alloy processed by PIM/MIM route" in Science of Sintering, 49, no. 3 (2017):299-309,
https://doi.org/10.2298/SOS1703299N .,
https://hdl.handle.net/21.15107/rcub_dais_2342 .

TY  - CONF
AU  - Čukić, Bratislav
AU  - Mitrović, Nebojša S.
AU  - Labus, Nebojša
AU  - Nedeljković, Borivoje
AU  - Popović, Marko
AU  - Luković, Milentije
AU  - Stoica, Mihai
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/14206
AB  - Uzorci amorfne masivne metalne legure sastava Fe65.5Cr4Mo4Ga4P12C5B5.5 dobijeni su tehnologijom livenja rastopa u bakarne kalupe prečnika 1,5 mm i 1,8 mm. DTA analizom je utvrdjena temperatura kristalizacije TX = 810 K. S ciljem ispitivanja procesa termičkog širenja (dilatacije) sprovedeni su višestruki termički tretmani do oko 200 K iznad temperature kristalizacije. Uticaj procesa kristalizacije na termičko širenje je izučavan preko temperaturske zavisnosti koeficijenta termičkog širenja koji pokazuje evidentne promene tokom kristalizacije za razliku od skoro konstantne vrednosti kod legure u iskristalisanom stanju. Stereološkom i XRD analizom su praćene promene strukture iz amorfne u mikrokristalnu. S obzirom na sastav legure kojim se težilo poboljšanju mehaničkih svojstava sprovedena su kontrolna merenja tvrdoće koja su pokazala povećanje HV1 sa vrednosti od oko 713 u amorfnom stanju do preko 876 u mikrokristalnom stanju
AB  - Bulk metallic glass with nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 was prepared by cooper mold casting with 1.5 mm and 1.8 mm diameter cylinders. Crystallization temperature TX= 810 K was observed by DTA analysis. Repeated thermal treatments were performed to about 200 K over the crystallization temperature in order to investigate thermal dilatation effects. Structural changes were examined by optical microscopy and XRD analysis. Intensive changes of thermal dilatation coefficient was observed during crystallization process of amorphous structure. However, during the second heating run already crystalline structure exhibit almost constant value of thermal dilatation coefficient. Hardness test shows the increase of HV1 value from about 713 for as-cast samples to about 876 in microcrystalline state.
PB  - Београд : ЕТРАН
C3  - Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.
T1  - Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB
T1  - Correlation of crystallization process and thermal dilatation behavior in FeCrMoGaPCB bulk metallic glass
SP  - NM1.4.1-6
UR  - https://hdl.handle.net/21.15107/rcub_dais_14206
ER  - 

@conference{
author = "Čukić, Bratislav and Mitrović, Nebojša S. and Labus, Nebojša and Nedeljković, Borivoje and Popović, Marko and Luković, Milentije and Stoica, Mihai",
year = "2014",
abstract = "Uzorci amorfne masivne metalne legure sastava Fe65.5Cr4Mo4Ga4P12C5B5.5 dobijeni su tehnologijom livenja rastopa u bakarne kalupe prečnika 1,5 mm i 1,8 mm. DTA analizom je utvrdjena temperatura kristalizacije TX = 810 K. S ciljem ispitivanja procesa termičkog širenja (dilatacije) sprovedeni su višestruki termički tretmani do oko 200 K iznad temperature kristalizacije. Uticaj procesa kristalizacije na termičko širenje je izučavan preko temperaturske zavisnosti koeficijenta termičkog širenja koji pokazuje evidentne promene tokom kristalizacije za razliku od skoro konstantne vrednosti kod legure u iskristalisanom stanju. Stereološkom i XRD analizom su praćene promene strukture iz amorfne u mikrokristalnu. S obzirom na sastav legure kojim se težilo poboljšanju mehaničkih svojstava sprovedena su kontrolna merenja tvrdoće koja su pokazala povećanje HV1 sa vrednosti od oko 713 u amorfnom stanju do preko 876 u mikrokristalnom stanju, Bulk metallic glass with nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 was prepared by cooper mold casting with 1.5 mm and 1.8 mm diameter cylinders. Crystallization temperature TX= 810 K was observed by DTA analysis. Repeated thermal treatments were performed to about 200 K over the crystallization temperature in order to investigate thermal dilatation effects. Structural changes were examined by optical microscopy and XRD analysis. Intensive changes of thermal dilatation coefficient was observed during crystallization process of amorphous structure. However, during the second heating run already crystalline structure exhibit almost constant value of thermal dilatation coefficient. Hardness test shows the increase of HV1 value from about 713 for as-cast samples to about 876 in microcrystalline state.",
publisher = "Београд : ЕТРАН",
journal = "Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.",
title = "Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB, Correlation of crystallization process and thermal dilatation behavior in FeCrMoGaPCB bulk metallic glass",
pages = "NM1.4.1-6",
url = "https://hdl.handle.net/21.15107/rcub_dais_14206"
}

Čukić, B., Mitrović, N. S., Labus, N., Nedeljković, B., Popović, M., Luković, M.,& Stoica, M.. (2014). Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB. in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.
Београд : ЕТРАН., NM1.4.1-6.
https://hdl.handle.net/21.15107/rcub_dais_14206

Čukić B, Mitrović NS, Labus N, Nedeljković B, Popović M, Luković M, Stoica M. Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB. in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.. 2014;:NM1.4.1-6.
https://hdl.handle.net/21.15107/rcub_dais_14206 .

Čukić, Bratislav, Mitrović, Nebojša S., Labus, Nebojša, Nedeljković, Borivoje, Popović, Marko, Luković, Milentije, Stoica, Mihai, "Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB" in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014. (2014):NM1.4.1-6,
https://hdl.handle.net/21.15107/rcub_dais_14206 .

TY  - CONF
AU  - Jovanović, Ivana
AU  - Stevanović, Magdalena
AU  - Nedeljković, Borivoje
AU  - Ignjatović, Nenad
PY  - 2007
UR  - https://www.scientific.net/MSF.555.453
UR  - https://dais.sanu.ac.rs/123456789/15644
AB  - Biodegradable micro- and nanospheres made of poly-l-lactide (PLLA) are very potent drug or antigen delivery systems with inherent potential for drug and antigen targeting. The objective of this study is to formulate modified PLLA microparticles with defined size and shape that can efficiently bind bioactive component. The effects of some process variables on the size distribution of particles prepared by precipitation method are examined. The main focus is to study the effect of co-solvent selection and poly(vinyl alcohol) PVA concentration on the shape and size of the particles. Chlorophorm is used as a solvent. Methanol (MeOH) and ethanol (EtOH) are selected as co-solvents. Motivation for replacing MeOH with EtOH in pharmaceutical applications is explained by less harmful nature of EtOH. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) are used to characterize the particles. Optimal particles are achieved in ethanol and at higher PVA concentration
C3  - Research Trends in Contemporary Materials Science
T1  - The Effect of Processing Parameters on Characteristics of Poly-L-Lactide Microspheres
SP  - 453
EP  - 458
DO  - 10.4028/www.scientific.net/MSF.555.453
UR  - https://hdl.handle.net/21.15107/rcub_dais_15644
ER  - 

@conference{
author = "Jovanović, Ivana and Stevanović, Magdalena and Nedeljković, Borivoje and Ignjatović, Nenad",
year = "2007",
abstract = "Biodegradable micro- and nanospheres made of poly-l-lactide (PLLA) are very potent drug or antigen delivery systems with inherent potential for drug and antigen targeting. The objective of this study is to formulate modified PLLA microparticles with defined size and shape that can efficiently bind bioactive component. The effects of some process variables on the size distribution of particles prepared by precipitation method are examined. The main focus is to study the effect of co-solvent selection and poly(vinyl alcohol) PVA concentration on the shape and size of the particles. Chlorophorm is used as a solvent. Methanol (MeOH) and ethanol (EtOH) are selected as co-solvents. Motivation for replacing MeOH with EtOH in pharmaceutical applications is explained by less harmful nature of EtOH. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) are used to characterize the particles. Optimal particles are achieved in ethanol and at higher PVA concentration",
journal = "Research Trends in Contemporary Materials Science",
title = "The Effect of Processing Parameters on Characteristics of Poly-L-Lactide Microspheres",
pages = "453-458",
doi = "10.4028/www.scientific.net/MSF.555.453",
url = "https://hdl.handle.net/21.15107/rcub_dais_15644"
}

Jovanović, I., Stevanović, M., Nedeljković, B.,& Ignjatović, N.. (2007). The Effect of Processing Parameters on Characteristics of Poly-L-Lactide Microspheres. in Research Trends in Contemporary Materials Science, 453-458.
https://doi.org/10.4028/www.scientific.net/MSF.555.453
https://hdl.handle.net/21.15107/rcub_dais_15644

Jovanović I, Stevanović M, Nedeljković B, Ignjatović N. The Effect of Processing Parameters on Characteristics of Poly-L-Lactide Microspheres. in Research Trends in Contemporary Materials Science. 2007;:453-458.
doi:10.4028/www.scientific.net/MSF.555.453
https://hdl.handle.net/21.15107/rcub_dais_15644 .

Jovanović, Ivana, Stevanović, Magdalena, Nedeljković, Borivoje, Ignjatović, Nenad, "The Effect of Processing Parameters on Characteristics of Poly-L-Lactide Microspheres" in Research Trends in Contemporary Materials Science (2007):453-458,
https://doi.org/10.4028/www.scientific.net/MSF.555.453 .,
https://hdl.handle.net/21.15107/rcub_dais_15644 .