TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Devečerski, Aleksandar
AU  - Bojanic, S.
AU  - Jovanović, Milan T.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4311
AB  - The objective of the work is to study the effects of the high-energy milling on strengthening, thermal stability and electrical conductivity of Cu-Al2O3 composite. The prealloyed copper powders, atomized in inert gas and containing 3 wt. % Al, were milled up to 20 h in the planetary ball mill to oxidize in situ aluminium with oxygen from the air. Composite compacts were obtained by hot-pressing in an argon atmosphere at 800 degrees C for 3 h under the pressure of 35 MPa. The microstructural characterization was performed by the optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction analysis (XRD). The microhardness, electrical conductivity and density measurements were also carried out. The effect of internal oxidation and high-energy milling on strengthening of Cu-Al2O3 composite was significant, The increase of the microhardness of composite compacts (292 HV) is almost threefold comparing to compacts processed from the as-received Cu-3 wt. % Al powder (102 HV). The grain size of Cu-Al2O3 compacts processed from 5 and 20 h-milled powders was 75 and 45 nm, respectively. The small increase in the grain size and the small microhardness drop indicate the high thermal stability of Cu-Al2O3 composite during high-temperature exposure at 800 degrees C.
T2  - Revista de Metalurgia
T1  - Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation
VL  - 46
IS  - 6
SP  - 520
EP  - 529
DO  - 10.3989/revmetalmadrid.1024
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Devečerski, Aleksandar and Bojanic, S. and Jovanović, Milan T.",
year = "2010",
abstract = "The objective of the work is to study the effects of the high-energy milling on strengthening, thermal stability and electrical conductivity of Cu-Al2O3 composite. The prealloyed copper powders, atomized in inert gas and containing 3 wt. % Al, were milled up to 20 h in the planetary ball mill to oxidize in situ aluminium with oxygen from the air. Composite compacts were obtained by hot-pressing in an argon atmosphere at 800 degrees C for 3 h under the pressure of 35 MPa. The microstructural characterization was performed by the optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction analysis (XRD). The microhardness, electrical conductivity and density measurements were also carried out. The effect of internal oxidation and high-energy milling on strengthening of Cu-Al2O3 composite was significant, The increase of the microhardness of composite compacts (292 HV) is almost threefold comparing to compacts processed from the as-received Cu-3 wt. % Al powder (102 HV). The grain size of Cu-Al2O3 compacts processed from 5 and 20 h-milled powders was 75 and 45 nm, respectively. The small increase in the grain size and the small microhardness drop indicate the high thermal stability of Cu-Al2O3 composite during high-temperature exposure at 800 degrees C.",
journal = "Revista de Metalurgia",
title = "Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation",
volume = "46",
number = "6",
pages = "520-529",
doi = "10.3989/revmetalmadrid.1024"
}

Rajković, V. M., Božić, D., Devečerski, A., Bojanic, S.,& Jovanović, M. T.. (2010). Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation. in Revista de Metalurgia, 46(6), 520-529.
https://doi.org/10.3989/revmetalmadrid.1024

Rajković VM, Božić D, Devečerski A, Bojanic S, Jovanović MT. Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation. in Revista de Metalurgia. 2010;46(6):520-529.
doi:10.3989/revmetalmadrid.1024 .

Rajković, Višeslava M., Božić, Dušan, Devečerski, Aleksandar, Bojanic, S., Jovanović, Milan T., "Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation" in Revista de Metalurgia, 46, no. 6 (2010):520-529,
https://doi.org/10.3989/revmetalmadrid.1024 . .

TY  - JOUR
AU  - Ivanović, Nenad
AU  - Radisavljević, Ivana
AU  - Marjanovic, D.
AU  - Bojanic, S.
AU  - Carreras, C.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3033
AB  - Electronic and vibrational properties of phenylene-based oligomers from biphenyl P2P to para-sexiphenil P6P, and their dependence on torsion angle are calculated using semiempirical quantum mechanic (AM1, ZINDO/S) and ab initio linear combination of atomic orbitals methods. The systematic relations between molecular size and geometry, and numerous molecular properties have been established, providing the basis both for the spectroscopic identification of different structures that could appear during material processing and for tailoring of devices with desired properties. (c) 2006 Wiley Periodicals, Inc.
T2  - Journal of Polymer Science. Part B: Polymer Physics
T1  - Molecular size and conformational effects on oligophenylenes electronic and vibrational properties
VL  - 44
IS  - 13
SP  - 1783
EP  - 1794
DO  - 10.1002/polb.20828
ER  - 

@article{
author = "Ivanović, Nenad and Radisavljević, Ivana and Marjanovic, D. and Bojanic, S. and Carreras, C.",
year = "2006",
abstract = "Electronic and vibrational properties of phenylene-based oligomers from biphenyl P2P to para-sexiphenil P6P, and their dependence on torsion angle are calculated using semiempirical quantum mechanic (AM1, ZINDO/S) and ab initio linear combination of atomic orbitals methods. The systematic relations between molecular size and geometry, and numerous molecular properties have been established, providing the basis both for the spectroscopic identification of different structures that could appear during material processing and for tailoring of devices with desired properties. (c) 2006 Wiley Periodicals, Inc.",
journal = "Journal of Polymer Science. Part B: Polymer Physics",
title = "Molecular size and conformational effects on oligophenylenes electronic and vibrational properties",
volume = "44",
number = "13",
pages = "1783-1794",
doi = "10.1002/polb.20828"
}

Ivanović, N., Radisavljević, I., Marjanovic, D., Bojanic, S.,& Carreras, C.. (2006). Molecular size and conformational effects on oligophenylenes electronic and vibrational properties. in Journal of Polymer Science. Part B: Polymer Physics, 44(13), 1783-1794.
https://doi.org/10.1002/polb.20828

Ivanović N, Radisavljević I, Marjanovic D, Bojanic S, Carreras C. Molecular size and conformational effects on oligophenylenes electronic and vibrational properties. in Journal of Polymer Science. Part B: Polymer Physics. 2006;44(13):1783-1794.
doi:10.1002/polb.20828 .

Ivanović, Nenad, Radisavljević, Ivana, Marjanovic, D., Bojanic, S., Carreras, C., "Molecular size and conformational effects on oligophenylenes electronic and vibrational properties" in Journal of Polymer Science. Part B: Polymer Physics, 44, no. 13 (2006):1783-1794,
https://doi.org/10.1002/polb.20828 . .