TY  - JOUR
AU  - Filipović, S.
AU  - Obradović, N.
AU  - Andjelković, Lj.
AU  - Olćan, D.
AU  - Petrović, J.
AU  - Mirković, M.
AU  - Pavlović, V.
AU  - Jeremić, D.
AU  - Vlahović, B.
AU  - Đorđević, A.
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5835
AB  - Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.
PB  - International Institute for the Science of Sintering (IISS)
T2  - Science of Sintering
T1  - Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction
EP  - 8
IS  - 1
SP  - 1
VL  - 53
DO  - 10.2298/SOS2101001F
ER  - 

@article{
author = "Filipović, S. and Obradović, N. and Andjelković, Lj. and Olćan, D. and Petrović, J. and Mirković, M. and Pavlović, V. and Jeremić, D. and Vlahović, B. and Đorđević, A.",
year = "2021",
abstract = "Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.",
publisher = "International Institute for the Science of Sintering (IISS)",
journal = "Science of Sintering",
title = "Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction",
pages = "8-1",
number = "1",
volume = "53",
doi = "10.2298/SOS2101001F"
}

Filipović, S., Obradović, N., Andjelković, Lj., Olćan, D., Petrović, J., Mirković, M., Pavlović, V., Jeremić, D., Vlahović, B.,& Đorđević, A.. (2021). Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction. in Science of Sintering
International Institute for the Science of Sintering (IISS)., 53(1), 1-8.
https://doi.org/10.2298/SOS2101001F

Filipović S, Obradović N, Andjelković L, Olćan D, Petrović J, Mirković M, Pavlović V, Jeremić D, Vlahović B, Đorđević A. Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction. in Science of Sintering. 2021;53(1):1-8.
doi:10.2298/SOS2101001F .

Filipović, S., Obradović, N., Andjelković, Lj., Olćan, D., Petrović, J., Mirković, M., Pavlović, V., Jeremić, D., Vlahović, B., Đorđević, A., "Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction" in Science of Sintering, 53, no. 1 (2021):1-8,
https://doi.org/10.2298/SOS2101001F . .

TY  - JOUR
AU  - Obradović, N.
AU  - Gigov, M.
AU  - Djordjević, A.
AU  - Kern, F.
AU  - Dmitrović, S.
AU  - Matović, B.
AU  - Djordjević, A.
AU  - Tshantshapanyan, A.
AU  - Vlahović, Branislav
AU  - Petrović, P.
AU  - Pavlović, Vladimir
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5126
AB  - The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Shungite – a carbon-mineral rock material: Its sinterability and possible applications
EP  - 97
IS  - 1
SP  - 89
VL  - 13
DO  - 10.2298/PAC1901089O
ER  - 

@article{
author = "Obradović, N. and Gigov, M. and Djordjević, A. and Kern, F. and Dmitrović, S. and Matović, B. and Djordjević, A. and Tshantshapanyan, A. and Vlahović, Branislav and Petrović, P. and Pavlović, Vladimir",
year = "2019",
abstract = "The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Shungite – a carbon-mineral rock material: Its sinterability and possible applications",
pages = "97-89",
number = "1",
volume = "13",
doi = "10.2298/PAC1901089O"
}

Obradović, N., Gigov, M., Djordjević, A., Kern, F., Dmitrović, S., Matović, B., Djordjević, A., Tshantshapanyan, A., Vlahović, B., Petrović, P.,& Pavlović, V.. (2019). Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 13(1), 89-97.
https://doi.org/10.2298/PAC1901089O

Obradović N, Gigov M, Djordjević A, Kern F, Dmitrović S, Matović B, Djordjević A, Tshantshapanyan A, Vlahović B, Petrović P, Pavlović V. Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics. 2019;13(1):89-97.
doi:10.2298/PAC1901089O .

Obradović, N., Gigov, M., Djordjević, A., Kern, F., Dmitrović, S., Matović, B., Djordjević, A., Tshantshapanyan, A., Vlahović, Branislav, Petrović, P., Pavlović, Vladimir, "Shungite – a carbon-mineral rock material: Its sinterability and possible applications" in Processing and Application of Ceramics, 13, no. 1 (2019):89-97,
https://doi.org/10.2298/PAC1901089O . .

TY  - JOUR
AU  - Obradović, N.
AU  - Fahrenholtz, W.G.
AU  - Filipović, Suzana
AU  - Corlett, C.
AU  - Djordjević, P.
AU  - Rogan, J.
AU  - Vulić, Predrag J.
AU  - Buljak, V.
AU  - Pavlović, Vladimir
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5150
AB  - Single phase MgAl2O4 was made from a one-to-one molar ratio of MgO and Al2O3 powders mixed using ball-milling. Mixtures of MgO and Al2O3 were subsequently treated in planetary ball mill for 30, 60, 90 and 120 minutes in air. The aim of this study was to examine phase composition, microstructure, and densification behavior of sintered specimens. After sintering in dilatometer at 1500 °C, the powder was converted to single phase MgAl2O4. The results show that mechanical activation improved the densification behavior of MgAl2O4 sintered specimens, and it reduced the onset temperature for sintering by approx. 100oC. Based on dilatometer data, powders were subsequently densified at 1450oC by hot pressing. Almost аll specimens exhibited full density, while sample activated for 30 minutes showed the fastest densification rate.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Characterization of MgAl2O4 sintered ceramics
EP  - 376
IS  - 4
SP  - 363
VL  - 51
DO  - 10.2298/SOS1904363O
ER  - 

@article{
author = "Obradović, N. and Fahrenholtz, W.G. and Filipović, Suzana and Corlett, C. and Djordjević, P. and Rogan, J. and Vulić, Predrag J. and Buljak, V. and Pavlović, Vladimir",
year = "2019",
abstract = "Single phase MgAl2O4 was made from a one-to-one molar ratio of MgO and Al2O3 powders mixed using ball-milling. Mixtures of MgO and Al2O3 were subsequently treated in planetary ball mill for 30, 60, 90 and 120 minutes in air. The aim of this study was to examine phase composition, microstructure, and densification behavior of sintered specimens. After sintering in dilatometer at 1500 °C, the powder was converted to single phase MgAl2O4. The results show that mechanical activation improved the densification behavior of MgAl2O4 sintered specimens, and it reduced the onset temperature for sintering by approx. 100oC. Based on dilatometer data, powders were subsequently densified at 1450oC by hot pressing. Almost аll specimens exhibited full density, while sample activated for 30 minutes showed the fastest densification rate.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Characterization of MgAl2O4 sintered ceramics",
pages = "376-363",
number = "4",
volume = "51",
doi = "10.2298/SOS1904363O"
}

Obradović, N., Fahrenholtz, W.G., Filipović, S., Corlett, C., Djordjević, P., Rogan, J., Vulić, P. J., Buljak, V.,& Pavlović, V.. (2019). Characterization of MgAl2O4 sintered ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 51(4), 363-376.
https://doi.org/10.2298/SOS1904363O

Obradović N, Fahrenholtz W, Filipović S, Corlett C, Djordjević P, Rogan J, Vulić PJ, Buljak V, Pavlović V. Characterization of MgAl2O4 sintered ceramics. in Science of Sintering. 2019;51(4):363-376.
doi:10.2298/SOS1904363O .

Obradović, N., Fahrenholtz, W.G., Filipović, Suzana, Corlett, C., Djordjević, P., Rogan, J., Vulić, Predrag J., Buljak, V., Pavlović, Vladimir, "Characterization of MgAl2O4 sintered ceramics" in Science of Sintering, 51, no. 4 (2019):363-376,
https://doi.org/10.2298/SOS1904363O . .

TY  - CONF
AU  - Božić, D.
AU  - Nikolić, N.
AU  - Obradović, N.
AU  - Loddo, D.
AU  - Stojićević, D.
AU  - Saulić, M.
AU  - Savić, A.
AU  - Vrbničanin, S.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6456
AB  - Poznavanje popolacionih varijabilnosti korovskih vrsta može da bude veoma korsino za njihovo efikasno suzbijanje, usled toga što morfo-anatomske i genetičke razlike između populacija mogu usloviti i različitu osetljivost na herbicide. Razlike između populacija različitog geografskog porekla ne moraju biti uslovljenje isključivo njihovim genetičkim razlikama, već mogu biti posledica uticaja agroekoloških uslova u kojima su se biljke razvijale. Kako bi se precizno utvrdila populacija različitog geografskog porekla neophodno ih je gajiti u istim uslovima sredine kako bi se eliminisao efekat sredine na njihov rast, razviće i plodonošenje.
Populaciona varijabilnost invazivne korovske vrste Abutilon theophrasti Medic. Je analizirana kod 12 populacija različitog geografskog porekla (Katalonija – Španija, Hrvatska, Grčka, Mađarska, Ajova-SAD, Legnaro – Italija, Portugal, Slovenija, Srbija). U fazi fizičke zrelosti semena su sakupljena u navedenim područjima I 2014. posejana na oglednom dobru Poljoprivrednog fakulteta “Radmilovac” u gustini 1 biljka na 0,25 m2. U fazi plodonešenja A. theophrasti mereni su brojni vegetativni (visina stabla, dužina korena, broj grana, broj listova, površina listova) i generativni (broj čaura, prečnik čaura, broj kućica u čauri, masa semena po biljci) parametri kod ispitivanih populacija.
Generalno, utvrđena je veoma izražajna intrapopulaciona varijabilnost na nivou većine generativnih i vegetativnih parametara. Međutim, kod interpopulacione varijabilnosti značajne razlike u vegetativnim parametrima su zabeležene samo između pojedinih populacija (Arganda: Španija: Grčka, Srbija, Mađarska i Italija (Legnaro), zatim SAD (Ajova) : Srbija i Grčka, pri čemu su najizraženije bile u odnosu na površinu listova. U odnosu na generativne parameter razlike između populacija su bile najizraženije za broj kućica po čauri i prečnik čaura. Radi sveobuhvatne analize varijabilnosti ispitivanih populacija neophodno je proučiti i njihovu anatomsku građu, površinske structure lista (maljavost), fizičke karakteristike semena, kao i genetičku varijabilnost populacija na molekularnom nivou.

Zahvaljujemo s eministrarstvu prosvete, nauke i tehnološkog razvoja republike srbije (projekat III 46008) i EU FP7-REGPOT AREA projektu koji su podržali ova istraživanja.
PB  - Društvo za zaštitu bilja Srbije
C3  - XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea
T1  - Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla
SP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6456
ER  - 

@conference{
author = "Božić, D. and Nikolić, N. and Obradović, N. and Loddo, D. and Stojićević, D. and Saulić, M. and Savić, A. and Vrbničanin, S.",
year = "2015",
abstract = "Poznavanje popolacionih varijabilnosti korovskih vrsta može da bude veoma korsino za njihovo efikasno suzbijanje, usled toga što morfo-anatomske i genetičke razlike između populacija mogu usloviti i različitu osetljivost na herbicide. Razlike između populacija različitog geografskog porekla ne moraju biti uslovljenje isključivo njihovim genetičkim razlikama, već mogu biti posledica uticaja agroekoloških uslova u kojima su se biljke razvijale. Kako bi se precizno utvrdila populacija različitog geografskog porekla neophodno ih je gajiti u istim uslovima sredine kako bi se eliminisao efekat sredine na njihov rast, razviće i plodonošenje.
Populaciona varijabilnost invazivne korovske vrste Abutilon theophrasti Medic. Je analizirana kod 12 populacija različitog geografskog porekla (Katalonija – Španija, Hrvatska, Grčka, Mađarska, Ajova-SAD, Legnaro – Italija, Portugal, Slovenija, Srbija). U fazi fizičke zrelosti semena su sakupljena u navedenim područjima I 2014. posejana na oglednom dobru Poljoprivrednog fakulteta “Radmilovac” u gustini 1 biljka na 0,25 m2. U fazi plodonešenja A. theophrasti mereni su brojni vegetativni (visina stabla, dužina korena, broj grana, broj listova, površina listova) i generativni (broj čaura, prečnik čaura, broj kućica u čauri, masa semena po biljci) parametri kod ispitivanih populacija.
Generalno, utvrđena je veoma izražajna intrapopulaciona varijabilnost na nivou većine generativnih i vegetativnih parametara. Međutim, kod interpopulacione varijabilnosti značajne razlike u vegetativnim parametrima su zabeležene samo između pojedinih populacija (Arganda: Španija: Grčka, Srbija, Mađarska i Italija (Legnaro), zatim SAD (Ajova) : Srbija i Grčka, pri čemu su najizraženije bile u odnosu na površinu listova. U odnosu na generativne parameter razlike između populacija su bile najizraženije za broj kućica po čauri i prečnik čaura. Radi sveobuhvatne analize varijabilnosti ispitivanih populacija neophodno je proučiti i njihovu anatomsku građu, površinske structure lista (maljavost), fizičke karakteristike semena, kao i genetičku varijabilnost populacija na molekularnom nivou.

Zahvaljujemo s eministrarstvu prosvete, nauke i tehnološkog razvoja republike srbije (projekat III 46008) i EU FP7-REGPOT AREA projektu koji su podržali ova istraživanja.",
publisher = "Društvo za zaštitu bilja Srbije",
journal = "XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea",
title = "Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla",
pages = "78",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6456"
}

Božić, D., Nikolić, N., Obradović, N., Loddo, D., Stojićević, D., Saulić, M., Savić, A.,& Vrbničanin, S.. (2015). Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla. in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea
Društvo za zaštitu bilja Srbije., 78.
https://hdl.handle.net/21.15107/rcub_agrospace_6456

Božić D, Nikolić N, Obradović N, Loddo D, Stojićević D, Saulić M, Savić A, Vrbničanin S. Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla. in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea. 2015;:78.
https://hdl.handle.net/21.15107/rcub_agrospace_6456 .

Božić, D., Nikolić, N., Obradović, N., Loddo, D., Stojićević, D., Saulić, M., Savić, A., Vrbničanin, S., "Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla" in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea (2015):78,
https://hdl.handle.net/21.15107/rcub_agrospace_6456 .

TY  - JOUR
AU  - Kosanović, Darko
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Ristić, M.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2437
AB  - The aim of this work was to analyse the kinetics and microstructure evolution of ZnO sintering process. ZnO powder was isothermally sintered (15, 30, 60, 90 and 120 min) in the temperature range from 8000C to 12000C. The values of Lenel parameter were calculated and used for the analysis of the densification and mass transport processes. Using scanning electron microscopy the analysis of the microstructure evolution and dependence of the average grain size with temperature and time of sintering was obtained. The results of this research could enable development of a new phenomenological equations in the analyses of ZnO-based materials sintering kinetics.
PB  - Institut za istraživanja i projektovanja u privredi, Beograd
T2  - Journal of Applied Engineering Science
T1  - Microstructure evolution and sintering kinetics of ZnO
EP  - 322
IS  - 2
SP  - 317
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2437
ER  - 

@article{
author = "Kosanović, Darko and Filipović, Suzana and Obradović, N. and Pavlović, Vladimir and Ristić, M.",
year = "2011",
abstract = "The aim of this work was to analyse the kinetics and microstructure evolution of ZnO sintering process. ZnO powder was isothermally sintered (15, 30, 60, 90 and 120 min) in the temperature range from 8000C to 12000C. The values of Lenel parameter were calculated and used for the analysis of the densification and mass transport processes. Using scanning electron microscopy the analysis of the microstructure evolution and dependence of the average grain size with temperature and time of sintering was obtained. The results of this research could enable development of a new phenomenological equations in the analyses of ZnO-based materials sintering kinetics.",
publisher = "Institut za istraživanja i projektovanja u privredi, Beograd",
journal = "Journal of Applied Engineering Science",
title = "Microstructure evolution and sintering kinetics of ZnO",
pages = "322-317",
number = "2",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2437"
}

Kosanović, D., Filipović, S., Obradović, N., Pavlović, V.,& Ristić, M.. (2011). Microstructure evolution and sintering kinetics of ZnO. in Journal of Applied Engineering Science
Institut za istraživanja i projektovanja u privredi, Beograd., 9(2), 317-322.
https://hdl.handle.net/21.15107/rcub_agrospace_2437

Kosanović D, Filipović S, Obradović N, Pavlović V, Ristić M. Microstructure evolution and sintering kinetics of ZnO. in Journal of Applied Engineering Science. 2011;9(2):317-322.
https://hdl.handle.net/21.15107/rcub_agrospace_2437 .

Kosanović, Darko, Filipović, Suzana, Obradović, N., Pavlović, Vladimir, Ristić, M., "Microstructure evolution and sintering kinetics of ZnO" in Journal of Applied Engineering Science, 9, no. 2 (2011):317-322,
https://hdl.handle.net/21.15107/rcub_agrospace_2437 .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Marković, S.
AU  - Mitrić, M.
AU  - Ristić, M.M.
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2352
AB  - Mixtures of MgO-TiO2 were mechanically activated using high-energy planetary ball mill during 5, 10, 20, 40, 80 and 120 minutes. Sintering process was preformed in air at 1100°-1400°C for 2h. The decrease in powder's particle size was noticed as the time of mechanical activation increased and confirmed by particle size analyzer. XRD analyses were performed in order to acquire the information about phase composition. Different ratio mixtures of MgTiO3 and Mg2TiO4 are present within all sintered samples. The effect of tribophysical activation on microstructure was investigated by scanning electron microscopy. The differential thermal gravimetric analysis has been performed in order to investigate thermal behaviour of the mixtures.
AB  - Smeše MgO-TiO2 su mehanički aktivirane u visoko-energetskom planetarnom mlinu tokom 5, 10, 20, 40, 80 i 120 minuta. Fazni sastav je određen rendgenskom difrakcijom. Sa porastom vremena mlevenja, primećeno je smanjenje veličine čestica praha. Takođe, ispitan je i efekat tribofizičke aktivacije na mikrostrukturu praha metodom skenirajuće elektronske mikroskopije. Radi ispitivanja termičkih svojstava praha, urađena je diferencijalna termijska analiza. Proces sinterovanja izveden je u vazduhu u temperaturnom opsegu od 1100°-1400°C tokom 2 sata. U svim sinterovanim uzorcima uočeno je prisustvo dve faze MgTiO3 i Mg2TiO4 ali njihov međusobni odnos koncentracija varira u odnosu na temperaturu sinterovanja.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system
EP  - 151
IS  - 2
SP  - 143
VL  - 42
DO  - 10.2298/SOS100518002F
ER  - 

@article{
author = "Filipović, Suzana and Obradović, N. and Pavlović, Vladimir and Marković, S. and Mitrić, M. and Ristić, M.M.",
year = "2010",
abstract = "Mixtures of MgO-TiO2 were mechanically activated using high-energy planetary ball mill during 5, 10, 20, 40, 80 and 120 minutes. Sintering process was preformed in air at 1100°-1400°C for 2h. The decrease in powder's particle size was noticed as the time of mechanical activation increased and confirmed by particle size analyzer. XRD analyses were performed in order to acquire the information about phase composition. Different ratio mixtures of MgTiO3 and Mg2TiO4 are present within all sintered samples. The effect of tribophysical activation on microstructure was investigated by scanning electron microscopy. The differential thermal gravimetric analysis has been performed in order to investigate thermal behaviour of the mixtures., Smeše MgO-TiO2 su mehanički aktivirane u visoko-energetskom planetarnom mlinu tokom 5, 10, 20, 40, 80 i 120 minuta. Fazni sastav je određen rendgenskom difrakcijom. Sa porastom vremena mlevenja, primećeno je smanjenje veličine čestica praha. Takođe, ispitan je i efekat tribofizičke aktivacije na mikrostrukturu praha metodom skenirajuće elektronske mikroskopije. Radi ispitivanja termičkih svojstava praha, urađena je diferencijalna termijska analiza. Proces sinterovanja izveden je u vazduhu u temperaturnom opsegu od 1100°-1400°C tokom 2 sata. U svim sinterovanim uzorcima uočeno je prisustvo dve faze MgTiO3 i Mg2TiO4 ali njihov međusobni odnos koncentracija varira u odnosu na temperaturu sinterovanja.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system",
pages = "151-143",
number = "2",
volume = "42",
doi = "10.2298/SOS100518002F"
}

Filipović, S., Obradović, N., Pavlović, V., Marković, S., Mitrić, M.,& Ristić, M.M.. (2010). Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 42(2), 143-151.
https://doi.org/10.2298/SOS100518002F

Filipović S, Obradović N, Pavlović V, Marković S, Mitrić M, Ristić M. Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system. in Science of Sintering. 2010;42(2):143-151.
doi:10.2298/SOS100518002F .

Filipović, Suzana, Obradović, N., Pavlović, Vladimir, Marković, S., Mitrić, M., Ristić, M.M., "Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system" in Science of Sintering, 42, no. 2 (2010):143-151,
https://doi.org/10.2298/SOS100518002F . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Petrović, V.
AU  - Mitrić, M.
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2051
AB  - The aim of this work was to analyze the influence of mechanical activation on the MgCO3-TiO2 system. Mixtures of MgCO3-TiO2 were mechanically activated for 15, 30, 60 and 120 minutes in a planetary ball mill and after that sintered at 1100°C for 1h. XRD analyses were performed in order to give information about the phase composition and to determine a variety of microstructure parameters using Scherrer's method. Also, the effect of tribophysical activation and sintering process on microstructure was investigated by scanning electron microscopy. Electrical measurements were performed in order to determine electrical properties of sintered samples. Our conclusions are that the sample activated for 120 min showed the best electrical properties ( ε r=23.86, Q=233, ρ=0.38) and exhibited the best sinterability.
AB  - Cilj ovog rada bio je analiza uticaja mehaničke aktivacije na sistem MgCO3-TiO2. Smeše MgCO3-TiO2 su mehanički aktivirane u planetarnom mlinu sa kuglama u trajanju od 15, 30, 60 i 120 minuta i nakon toga sinterovane na 1100°C 1h. Radi utvrđivanja faznog sastava i promena mikrostrukturnih parametara, Šererovom metodom, urađena je rendgeno-difrakciona analiza. Efekti mehaničke aktivacije i procesa sinterovanja na mikrostrukturu ispitivani su skenirajućom elektronskom mikroskopijom. U cilju određivanja električnih svojstava sinteroanih uzoraka izvršena su električna merenja. Zaključak našeg rada je da uzorak sinterovan 120 minuta pokazuje najbolja električna svojstva (ε r=23,86; Q=233; ρ=0,38) i ispoljava najbolju sinterabilnost.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Influence of mechanical activation on structural and electrical properties of sintered MgTiO3 ceramics
EP  - 123
IS  - 2
SP  - 117
VL  - 41
DO  - 10.2298/SOS0902117F
ER  - 

@article{
author = "Filipović, Suzana and Obradović, N. and Pavlović, Vladimir and Petrović, V. and Mitrić, M.",
year = "2009",
abstract = "The aim of this work was to analyze the influence of mechanical activation on the MgCO3-TiO2 system. Mixtures of MgCO3-TiO2 were mechanically activated for 15, 30, 60 and 120 minutes in a planetary ball mill and after that sintered at 1100°C for 1h. XRD analyses were performed in order to give information about the phase composition and to determine a variety of microstructure parameters using Scherrer's method. Also, the effect of tribophysical activation and sintering process on microstructure was investigated by scanning electron microscopy. Electrical measurements were performed in order to determine electrical properties of sintered samples. Our conclusions are that the sample activated for 120 min showed the best electrical properties ( ε r=23.86, Q=233, ρ=0.38) and exhibited the best sinterability., Cilj ovog rada bio je analiza uticaja mehaničke aktivacije na sistem MgCO3-TiO2. Smeše MgCO3-TiO2 su mehanički aktivirane u planetarnom mlinu sa kuglama u trajanju od 15, 30, 60 i 120 minuta i nakon toga sinterovane na 1100°C 1h. Radi utvrđivanja faznog sastava i promena mikrostrukturnih parametara, Šererovom metodom, urađena je rendgeno-difrakciona analiza. Efekti mehaničke aktivacije i procesa sinterovanja na mikrostrukturu ispitivani su skenirajućom elektronskom mikroskopijom. U cilju određivanja električnih svojstava sinteroanih uzoraka izvršena su električna merenja. Zaključak našeg rada je da uzorak sinterovan 120 minuta pokazuje najbolja električna svojstva (ε r=23,86; Q=233; ρ=0,38) i ispoljava najbolju sinterabilnost.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Influence of mechanical activation on structural and electrical properties of sintered MgTiO3 ceramics",
pages = "123-117",
number = "2",
volume = "41",
doi = "10.2298/SOS0902117F"
}

Filipović, S., Obradović, N., Pavlović, V., Petrović, V.,& Mitrić, M.. (2009). Influence of mechanical activation on structural and electrical properties of sintered MgTiO3 ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 41(2), 117-123.
https://doi.org/10.2298/SOS0902117F

Filipović S, Obradović N, Pavlović V, Petrović V, Mitrić M. Influence of mechanical activation on structural and electrical properties of sintered MgTiO3 ceramics. in Science of Sintering. 2009;41(2):117-123.
doi:10.2298/SOS0902117F .

Filipović, Suzana, Obradović, N., Pavlović, Vladimir, Petrović, V., Mitrić, M., "Influence of mechanical activation on structural and electrical properties of sintered MgTiO3 ceramics" in Science of Sintering, 41, no. 2 (2009):117-123,
https://doi.org/10.2298/SOS0902117F . .