TY  - JOUR
AU  - Živković, L.
AU  - Bošković, Snežana B.
AU  - Vučković, A
AU  - Bučevac, Dušan
AU  - Miljkovic, M
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6466
AB  - Si3N4-TiN composites, with varying TiN content from 0-50 wt% and beta-Si3N4 seeds up to 5 wt%, were examined in respect of their electrical resistivity and fracture toughness. The composites are produced by liquid phase sintering using 3%Al2O3+7%Y2O3 as additive. beta-seed particles with different particle shape and aspect ratio were used in this investigation. The electrical conductivity of composites exhibits a percolative behaviour, which is characterised by an abrupt decrease in resistivity in composites with 36 wt%TiN. In composites with beta-Si3N4, for the same percolation concentration of TiN, the electrical resistivity is higher than in composites without seed particles. The fracture toughness shows a considerable improvement in Si3N4-36%TiN with 3 and 5 wt% seeds. High fracture toughness of 6.10 MPa m(1/2) could be achieved due to the controlled bimodal microstructure consisting of elongated beta-Si3N4 incorporated into a composite matrix.
T2  - Silicates Industriels
T1  - The effects of beta-seeds on the electrical and mechanical properties of Si3N4-TiN composites
VL  - 69
IS  - 7-8
SP  - 299
EP  - 304
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6466
ER  - 

@article{
author = "Živković, L. and Bošković, Snežana B. and Vučković, A and Bučevac, Dušan and Miljkovic, M",
year = "2004",
abstract = "Si3N4-TiN composites, with varying TiN content from 0-50 wt% and beta-Si3N4 seeds up to 5 wt%, were examined in respect of their electrical resistivity and fracture toughness. The composites are produced by liquid phase sintering using 3%Al2O3+7%Y2O3 as additive. beta-seed particles with different particle shape and aspect ratio were used in this investigation. The electrical conductivity of composites exhibits a percolative behaviour, which is characterised by an abrupt decrease in resistivity in composites with 36 wt%TiN. In composites with beta-Si3N4, for the same percolation concentration of TiN, the electrical resistivity is higher than in composites without seed particles. The fracture toughness shows a considerable improvement in Si3N4-36%TiN with 3 and 5 wt% seeds. High fracture toughness of 6.10 MPa m(1/2) could be achieved due to the controlled bimodal microstructure consisting of elongated beta-Si3N4 incorporated into a composite matrix.",
journal = "Silicates Industriels",
title = "The effects of beta-seeds on the electrical and mechanical properties of Si3N4-TiN composites",
volume = "69",
number = "7-8",
pages = "299-304",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6466"
}

Živković, L., Bošković, S. B., Vučković, A., Bučevac, D.,& Miljkovic, M.. (2004). The effects of beta-seeds on the electrical and mechanical properties of Si3N4-TiN composites. in Silicates Industriels, 69(7-8), 299-304.
https://hdl.handle.net/21.15107/rcub_vinar_6466

Živković L, Bošković SB, Vučković A, Bučevac D, Miljkovic M. The effects of beta-seeds on the electrical and mechanical properties of Si3N4-TiN composites. in Silicates Industriels. 2004;69(7-8):299-304.
https://hdl.handle.net/21.15107/rcub_vinar_6466 .

Živković, L., Bošković, Snežana B., Vučković, A, Bučevac, Dušan, Miljkovic, M, "The effects of beta-seeds on the electrical and mechanical properties of Si3N4-TiN composites" in Silicates Industriels, 69, no. 7-8 (2004):299-304,
https://hdl.handle.net/21.15107/rcub_vinar_6466 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Miljkovic, M
AU  - Jokanović, Vukoman R.
AU  - Uskoković, Dragan
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6435
AB  - LiMn2O4 powders were synthesized by ultrasonic spray pyrolysis. By varying the cooling conditions. two samples of powders were obtained: quenched in water (Q) and spontaneously cooled to room temperature (SC). The crystal structure of the as-prepared powders was revealed by X-ray powder diffraction. Structure refinements confirm that SC sample crystallizes in Fd3m space group, while Q sample crystallizes in I4(1)/amd space group. Particle morphology was determined by scanning electron microscopy. Electrochemical intercalation and deintercalation were examined in galvanostatic regime.
T2  - Materials Science Forum
T1  - Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis
VL  - 453-454
SP  - 387
EP  - 392
DO  - 10.4028/www.scientific.net/MSF.453-454.387
ER  - 

@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Miljkovic, M and Jokanović, Vukoman R. and Uskoković, Dragan",
year = "2004",
abstract = "LiMn2O4 powders were synthesized by ultrasonic spray pyrolysis. By varying the cooling conditions. two samples of powders were obtained: quenched in water (Q) and spontaneously cooled to room temperature (SC). The crystal structure of the as-prepared powders was revealed by X-ray powder diffraction. Structure refinements confirm that SC sample crystallizes in Fd3m space group, while Q sample crystallizes in I4(1)/amd space group. Particle morphology was determined by scanning electron microscopy. Electrochemical intercalation and deintercalation were examined in galvanostatic regime.",
journal = "Materials Science Forum",
title = "Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis",
volume = "453-454",
pages = "387-392",
doi = "10.4028/www.scientific.net/MSF.453-454.387"
}

Jugović, D., Mitrić, M., Cvjetićanin, N., Miljkovic, M., Jokanović, V. R.,& Uskoković, D.. (2004). Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis. in Materials Science Forum, 453-454, 387-392.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.387

Jugović D, Mitrić M, Cvjetićanin N, Miljkovic M, Jokanović VR, Uskoković D. Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis. in Materials Science Forum. 2004;453-454:387-392.
doi:10.4028/www.scientific.net/MSF.453-454.387 .

Jugović, Dragana, Mitrić, Miodrag, Cvjetićanin, Nikola, Miljkovic, M, Jokanović, Vukoman R., Uskoković, Dragan, "Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis" in Materials Science Forum, 453-454 (2004):387-392,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.387 . .

TY  - JOUR
AU  - Živković, L.
AU  - Nikolić, Zoran M.
AU  - Bošković, Snežana B.
AU  - Miljkovic, M
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2773
AB  - Si3N4-TiN ceramics sintered with Y2O3 and Y2O3 + Al2O3 as sintering aids and various content of TiN (0-50 wt.%) were investigated regarding their microstructural and electrical properties. Electroconductive composites were obtained with TiN content higher than 20 vol.%. Computer simulation of conductivity versus concentration of TiN has been done in respect of different models. The influence of dimensionality and type of conductive network on the critical exponent s in the power law, which describes the conductivity of composites, has been discussed. The addition of beta-Si3N4 seeds affected fracture toughness in Si3N4-36 wt.% TiN composites while only a slight change in electroconductivity of the composites was observed at the same time. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites
VL  - 373
IS  - 1-2
SP  - 231
EP  - 236
DO  - 10.1016/j.jallcom.2003.10.036
ER  - 

@article{
author = "Živković, L. and Nikolić, Zoran M. and Bošković, Snežana B. and Miljkovic, M",
year = "2004",
abstract = "Si3N4-TiN ceramics sintered with Y2O3 and Y2O3 + Al2O3 as sintering aids and various content of TiN (0-50 wt.%) were investigated regarding their microstructural and electrical properties. Electroconductive composites were obtained with TiN content higher than 20 vol.%. Computer simulation of conductivity versus concentration of TiN has been done in respect of different models. The influence of dimensionality and type of conductive network on the critical exponent s in the power law, which describes the conductivity of composites, has been discussed. The addition of beta-Si3N4 seeds affected fracture toughness in Si3N4-36 wt.% TiN composites while only a slight change in electroconductivity of the composites was observed at the same time. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites",
volume = "373",
number = "1-2",
pages = "231-236",
doi = "10.1016/j.jallcom.2003.10.036"
}

Živković, L., Nikolić, Z. M., Bošković, S. B.,& Miljkovic, M.. (2004). Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites. in Journal of Alloys and Compounds, 373(1-2), 231-236.
https://doi.org/10.1016/j.jallcom.2003.10.036

Živković L, Nikolić ZM, Bošković SB, Miljkovic M. Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites. in Journal of Alloys and Compounds. 2004;373(1-2):231-236.
doi:10.1016/j.jallcom.2003.10.036 .

Živković, L., Nikolić, Zoran M., Bošković, Snežana B., Miljkovic, M, "Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites" in Journal of Alloys and Compounds, 373, no. 1-2 (2004):231-236,
https://doi.org/10.1016/j.jallcom.2003.10.036 . .

TY  - JOUR
AU  - Ignjatović, Nenad L.
AU  - Nastasović, Aleksandra B.
AU  - Laninovic, V
AU  - Onjia, Antonije E.
AU  - Miljkovic, M
AU  - Konstantinovic, V
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6444
AB  - Bioresorbable barrier membranes have been widely used in dentistry and maxillofacial surgery. When the membranes are placed over bony defects and are closely adapted by the surrounding bone face, an environment that prevents invasion of competing non-osteogenetic cells from the overlying soft tissues can be created. The aim of the present study was to establish whether the production procedure of different polymeric and composite membranes affects their physicochemical properties. The physicochemical properties were examined by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), inverse gas chromatography (lGC) and tensile strength test (TST). The surface microstructure, dependent on the processing parameters, was perforated with smaller or larger pores. The dispersive component of the free surface energy decreased by adding bicalcium phosphate (BCP) to the polymer and, consequently, non-polar interactions with the surroundings became preferential.
T2  - Materials Science Forum
T1  - Preparation and properties of polymeric and composite bioresorbable barrier membranes
VL  - 453-454
SP  - 537
EP  - 542
DO  - 10.4028/www.scientific.net/MSF.453-454.537
ER  - 

@article{
author = "Ignjatović, Nenad L. and Nastasović, Aleksandra B. and Laninovic, V and Onjia, Antonije E. and Miljkovic, M and Konstantinovic, V",
year = "2004",
abstract = "Bioresorbable barrier membranes have been widely used in dentistry and maxillofacial surgery. When the membranes are placed over bony defects and are closely adapted by the surrounding bone face, an environment that prevents invasion of competing non-osteogenetic cells from the overlying soft tissues can be created. The aim of the present study was to establish whether the production procedure of different polymeric and composite membranes affects their physicochemical properties. The physicochemical properties were examined by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), inverse gas chromatography (lGC) and tensile strength test (TST). The surface microstructure, dependent on the processing parameters, was perforated with smaller or larger pores. The dispersive component of the free surface energy decreased by adding bicalcium phosphate (BCP) to the polymer and, consequently, non-polar interactions with the surroundings became preferential.",
journal = "Materials Science Forum",
title = "Preparation and properties of polymeric and composite bioresorbable barrier membranes",
volume = "453-454",
pages = "537-542",
doi = "10.4028/www.scientific.net/MSF.453-454.537"
}

Ignjatović, N. L., Nastasović, A. B., Laninovic, V., Onjia, A. E., Miljkovic, M.,& Konstantinovic, V.. (2004). Preparation and properties of polymeric and composite bioresorbable barrier membranes. in Materials Science Forum, 453-454, 537-542.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.537

Ignjatović NL, Nastasović AB, Laninovic V, Onjia AE, Miljkovic M, Konstantinovic V. Preparation and properties of polymeric and composite bioresorbable barrier membranes. in Materials Science Forum. 2004;453-454:537-542.
doi:10.4028/www.scientific.net/MSF.453-454.537 .

Ignjatović, Nenad L., Nastasović, Aleksandra B., Laninovic, V, Onjia, Antonije E., Miljkovic, M, Konstantinovic, V, "Preparation and properties of polymeric and composite bioresorbable barrier membranes" in Materials Science Forum, 453-454 (2004):537-542,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.537 . .

TY  - JOUR
AU  - Zlatanovic, D
AU  - Purenović, Milovan M.
AU  - Zec, Slavica
AU  - Miljkovic, M
PY  - 1998
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6257
AB  - This work presents the results obtained on the role of NaCl in chlorine roasting of MoS2. The process was performed in an oxygen atmosphere in the temperature range from 350 to 500 degrees C. The chlorine roasting of MoS2 in the mixture with NaCl was analysed and the products and change in the NaCl surface topography occurring during the processing were detected by x-ray diffractometry and Scanning Electron Microscopy (SEM), respectively. At a temperature below 400 degrees C chemical activity of NaCl resulted in a change of NaCl surface topography. However, only MoO3 was detected. At a temperature above 400 degrees C Na2Mo2O7, Na2SO4 and MoO3 were detected, as well as the melt around NaCl particles. Evaporation and condensation on cold wall of reaction tube of some compounds containing molybdenum and chlorine were also detected. Such phenomena will not occur if oxidation takes place without NaCl or MoS2/NaCl mixture is annealed in an inert atmosphere. This indicates that all detected phenomena were caused by NaCl reactions with products of oxidation of MoS2 and chlorine roasting of MoS2 occurred in the melt.
T2  - Materials Science Forum
T1  - The role of NaCl in chlorine roasting of MoS2
VL  - 282-2
SP  - 349
EP  - 354
DO  - 10.4028/www.scientific.net/MSF.282-283.349
ER  - 

@article{
author = "Zlatanovic, D and Purenović, Milovan M. and Zec, Slavica and Miljkovic, M",
year = "1998",
abstract = "This work presents the results obtained on the role of NaCl in chlorine roasting of MoS2. The process was performed in an oxygen atmosphere in the temperature range from 350 to 500 degrees C. The chlorine roasting of MoS2 in the mixture with NaCl was analysed and the products and change in the NaCl surface topography occurring during the processing were detected by x-ray diffractometry and Scanning Electron Microscopy (SEM), respectively. At a temperature below 400 degrees C chemical activity of NaCl resulted in a change of NaCl surface topography. However, only MoO3 was detected. At a temperature above 400 degrees C Na2Mo2O7, Na2SO4 and MoO3 were detected, as well as the melt around NaCl particles. Evaporation and condensation on cold wall of reaction tube of some compounds containing molybdenum and chlorine were also detected. Such phenomena will not occur if oxidation takes place without NaCl or MoS2/NaCl mixture is annealed in an inert atmosphere. This indicates that all detected phenomena were caused by NaCl reactions with products of oxidation of MoS2 and chlorine roasting of MoS2 occurred in the melt.",
journal = "Materials Science Forum",
title = "The role of NaCl in chlorine roasting of MoS2",
volume = "282-2",
pages = "349-354",
doi = "10.4028/www.scientific.net/MSF.282-283.349"
}

Zlatanovic, D., Purenović, M. M., Zec, S.,& Miljkovic, M.. (1998). The role of NaCl in chlorine roasting of MoS2. in Materials Science Forum, 282-2, 349-354.
https://doi.org/10.4028/www.scientific.net/MSF.282-283.349

Zlatanovic D, Purenović MM, Zec S, Miljkovic M. The role of NaCl in chlorine roasting of MoS2. in Materials Science Forum. 1998;282-2:349-354.
doi:10.4028/www.scientific.net/MSF.282-283.349 .

Zlatanovic, D, Purenović, Milovan M., Zec, Slavica, Miljkovic, M, "The role of NaCl in chlorine roasting of MoS2" in Materials Science Forum, 282-2 (1998):349-354,
https://doi.org/10.4028/www.scientific.net/MSF.282-283.349 . .