TY  - JOUR
AU  - Obradović, N.
AU  - Filipović, Suzana
AU  - Mitrić, M.
AU  - Pavlović, Vladimir
AU  - Paunović, V.
AU  - Kosanović, Darko
AU  - Balac, I.
AU  - Ristić, M.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3015
AB  - Starting mixtures of BaCO3, ZnO, and TiO2 powders are mechanically activated in a planetary ball mill for various periods of time. The powders obtained are sintered isothermally at 1100A degrees C for 120 min. Non-isothermal sintering process is followed by measurements with a sensitive dilatometer, as well. Results of microstructure characterization using SEM analyses along with DTA analyses are provided. These results are correlated with the values of electric resistivity, capacitance, and loss tangent of the samples, and it is found that with increasing milling time, the increase in values of electrical properties is noticed.
PB  - Springer, New York
T2  - Powder Metallurgy and Metal Ceramics
T1  - Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C
EP  - 718
IS  - 11-12
SP  - 714
VL  - 50
DO  - 10.1007/s11106-012-9380-y
ER  - 

@article{
author = "Obradović, N. and Filipović, Suzana and Mitrić, M. and Pavlović, Vladimir and Paunović, V. and Kosanović, Darko and Balac, I. and Ristić, M.M.",
year = "2012",
abstract = "Starting mixtures of BaCO3, ZnO, and TiO2 powders are mechanically activated in a planetary ball mill for various periods of time. The powders obtained are sintered isothermally at 1100A degrees C for 120 min. Non-isothermal sintering process is followed by measurements with a sensitive dilatometer, as well. Results of microstructure characterization using SEM analyses along with DTA analyses are provided. These results are correlated with the values of electric resistivity, capacitance, and loss tangent of the samples, and it is found that with increasing milling time, the increase in values of electrical properties is noticed.",
publisher = "Springer, New York",
journal = "Powder Metallurgy and Metal Ceramics",
title = "Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C",
pages = "718-714",
number = "11-12",
volume = "50",
doi = "10.1007/s11106-012-9380-y"
}

Obradović, N., Filipović, S., Mitrić, M., Pavlović, V., Paunović, V., Kosanović, D., Balac, I.,& Ristić, M.M.. (2012). Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C. in Powder Metallurgy and Metal Ceramics
Springer, New York., 50(11-12), 714-718.
https://doi.org/10.1007/s11106-012-9380-y

Obradović N, Filipović S, Mitrić M, Pavlović V, Paunović V, Kosanović D, Balac I, Ristić M. Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C. in Powder Metallurgy and Metal Ceramics. 2012;50(11-12):714-718.
doi:10.1007/s11106-012-9380-y .

Obradović, N., Filipović, Suzana, Mitrić, M., Pavlović, Vladimir, Paunović, V., Kosanović, Darko, Balac, I., Ristić, M.M., "Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C" in Powder Metallurgy and Metal Ceramics, 50, no. 11-12 (2012):714-718,
https://doi.org/10.1007/s11106-012-9380-y . .

TY  - JOUR
AU  - Obradović, N.
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3006
AB  - The base mix refractory concrete is corundum-based, containing corundum as refractory aggregate and CAC as hydraulic binder, with a spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis at four different heating rates (5, 10, 20, and 30 A degrees C/min). Thus, temperature was increased from 20 to 1100 A degrees C. It was noticed that first dehydration step occurs at lower temperatures, indicating at a desorption of physically adsorbed and interlayer water molecules. Second dehydration step, at higher temperatures is due to dehydroxylation of the lattices and decomposition of the interlayer anions.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Dehydration investigations of a refractory concrete using DTA method
EP  - 41
IS  - 1
SP  - 37
VL  - 110
DO  - 10.1007/s10973-011-1880-3
ER  - 

@article{
author = "Obradović, N. and Terzić, Anja and Pavlović, Ljubica and Filipović, Suzana and Pavlović, Vladimir",
year = "2012",
abstract = "The base mix refractory concrete is corundum-based, containing corundum as refractory aggregate and CAC as hydraulic binder, with a spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis at four different heating rates (5, 10, 20, and 30 A degrees C/min). Thus, temperature was increased from 20 to 1100 A degrees C. It was noticed that first dehydration step occurs at lower temperatures, indicating at a desorption of physically adsorbed and interlayer water molecules. Second dehydration step, at higher temperatures is due to dehydroxylation of the lattices and decomposition of the interlayer anions.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Dehydration investigations of a refractory concrete using DTA method",
pages = "41-37",
number = "1",
volume = "110",
doi = "10.1007/s10973-011-1880-3"
}

Obradović, N., Terzić, A., Pavlović, L., Filipović, S.,& Pavlović, V.. (2012). Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 110(1), 37-41.
https://doi.org/10.1007/s10973-011-1880-3

Obradović N, Terzić A, Pavlović L, Filipović S, Pavlović V. Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry. 2012;110(1):37-41.
doi:10.1007/s10973-011-1880-3 .

Obradović, N., Terzić, Anja, Pavlović, Ljubica, Filipović, Suzana, Pavlović, Vladimir, "Dehydration investigations of a refractory concrete using DTA method" in Journal of Thermal Analysis and Calorimetry, 110, no. 1 (2012):37-41,
https://doi.org/10.1007/s10973-011-1880-3 . .

TY  - JOUR
AU  - Obradović, N.
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir
AU  - Maricić, A.
AU  - Mitrović, N.
AU  - Balac, I.
AU  - Ristić, M.M.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2676
AB  - In this article the influence of mechanical activation on sintering process of magnesium-titanate and barium-zinc-titanate ceramics has been investigated. Both non-activated and mixtures treated in planetary ball mill for 80 minutes were sintered at 1100 degrees C and 1300 degrees C. The influence of mechanical activation on phase composition and crystal structure has been analyzed by XRD, while the effect of activation and sintering process on microstructure was investigated by scanning electron microscopy. It has been established that temperature of 1100 degrees C was to low to induce final sintering stage for both systems. Moreover, we concluded that barium-zinc-titanate ceramics exhibited better sinterability than magnesium-titanate ceramics.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Sintering of Mechanically Activated Magnesium-titanate and Barium-zinc-titanate Ceramics
EP  - 151
IS  - 2
SP  - 145
VL  - 43
DO  - 10.2298/SOS1102145O
ER  - 

@article{
author = "Obradović, N. and Filipović, Suzana and Pavlović, Vladimir and Maricić, A. and Mitrović, N. and Balac, I. and Ristić, M.M.",
year = "2011",
abstract = "In this article the influence of mechanical activation on sintering process of magnesium-titanate and barium-zinc-titanate ceramics has been investigated. Both non-activated and mixtures treated in planetary ball mill for 80 minutes were sintered at 1100 degrees C and 1300 degrees C. The influence of mechanical activation on phase composition and crystal structure has been analyzed by XRD, while the effect of activation and sintering process on microstructure was investigated by scanning electron microscopy. It has been established that temperature of 1100 degrees C was to low to induce final sintering stage for both systems. Moreover, we concluded that barium-zinc-titanate ceramics exhibited better sinterability than magnesium-titanate ceramics.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Sintering of Mechanically Activated Magnesium-titanate and Barium-zinc-titanate Ceramics",
pages = "151-145",
number = "2",
volume = "43",
doi = "10.2298/SOS1102145O"
}

Obradović, N., Filipović, S., Pavlović, V., Maricić, A., Mitrović, N., Balac, I.,& Ristić, M.M.. (2011). Sintering of Mechanically Activated Magnesium-titanate and Barium-zinc-titanate Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 43(2), 145-151.
https://doi.org/10.2298/SOS1102145O

Obradović N, Filipović S, Pavlović V, Maricić A, Mitrović N, Balac I, Ristić M. Sintering of Mechanically Activated Magnesium-titanate and Barium-zinc-titanate Ceramics. in Science of Sintering. 2011;43(2):145-151.
doi:10.2298/SOS1102145O .

Obradović, N., Filipović, Suzana, Pavlović, Vladimir, Maricić, A., Mitrović, N., Balac, I., Ristić, M.M., "Sintering of Mechanically Activated Magnesium-titanate and Barium-zinc-titanate Ceramics" in Science of Sintering, 43, no. 2 (2011):145-151,
https://doi.org/10.2298/SOS1102145O . .

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 . .

TY  - JOUR
AU  - Pavlović, Vladimir
AU  - Stojanović, Biljana D.
AU  - Zivković, Ljiljana
AU  - Branković, Goran
AU  - Ristić, Momčilo M.
PY  - 1996
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/101
AB  - The sintering behavior of BaTiO3 with LiF showed that it was possible to sinter barium titanate at temperatures below 1000 degrees C. Different combinations of the sintering powders were prepared by adding 1 to 5 w% LiF and sintering at the temperature of 950 degrees C for 20 hours. The grain growth of LiF fluxed BaTiO3 was studied, and electron microscopy was used to investigate and characterize the microstructure of the samples. The dielectric constant and dielectric losses were determined. It was shown that the composition of the liquid phase formed during this process had a prominent influence on the grain growth and on the formation of BaTiO3 with better dielectric properties.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Ferroelectrics
T1  - Grain growth during sintering of batio3 with lif
EP  - 168
SP  - 165
VL  - 186
DO  - 10.1080/00150199608218057
ER  - 

@article{
author = "Pavlović, Vladimir and Stojanović, Biljana D. and Zivković, Ljiljana and Branković, Goran and Ristić, Momčilo M.",
year = "1996",
abstract = "The sintering behavior of BaTiO3 with LiF showed that it was possible to sinter barium titanate at temperatures below 1000 degrees C. Different combinations of the sintering powders were prepared by adding 1 to 5 w% LiF and sintering at the temperature of 950 degrees C for 20 hours. The grain growth of LiF fluxed BaTiO3 was studied, and electron microscopy was used to investigate and characterize the microstructure of the samples. The dielectric constant and dielectric losses were determined. It was shown that the composition of the liquid phase formed during this process had a prominent influence on the grain growth and on the formation of BaTiO3 with better dielectric properties.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Ferroelectrics",
title = "Grain growth during sintering of batio3 with lif",
pages = "168-165",
volume = "186",
doi = "10.1080/00150199608218057"
}

Pavlović, V., Stojanović, B. D., Zivković, L., Branković, G.,& Ristić, M. M.. (1996). Grain growth during sintering of batio3 with lif. in Ferroelectrics
Taylor & Francis Ltd, Abingdon., 186, 165-168.
https://doi.org/10.1080/00150199608218057

Pavlović V, Stojanović BD, Zivković L, Branković G, Ristić MM. Grain growth during sintering of batio3 with lif. in Ferroelectrics. 1996;186:165-168.
doi:10.1080/00150199608218057 .

Pavlović, Vladimir, Stojanović, Biljana D., Zivković, Ljiljana, Branković, Goran, Ristić, Momčilo M., "Grain growth during sintering of batio3 with lif" in Ferroelectrics, 186 (1996):165-168,
https://doi.org/10.1080/00150199608218057 . .