Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites
Apstrakt
High-energy milling was used for production of Cu-Al2O3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al2O3 powders served as starting materials. Milling of prealloyed copper powders promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. Hot-pressed compacts of composites obtained from 5 and 20 h milled powders were additionally subjected to the high-temperature exposure in argon at 800 degrees C for 1 and 5 h. Characterization of processed material was performed by optical and scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness, as well as density and electrical conductivity measurements. Due to nano-sized Al2O3 particles microhardness and thermal stability of composite processed from milled prealloyed powders are higher than corresponding properties of composites processed from the milled powd...er mixtures. The results were discussed in terms of the effects of different size of starting copper powders and Al2O3 particles on the structure, strengthening of copper matrix, thermal stability and electrical conductivity of Cu-Al2O3 composites. (C) 2009 Elsevier Ltd. All rights reserved.
Ključne reči:
Composites / Powder metallurgy / Mechanical and physical properties / Microstructure / X-ray analysisIzvor:
Materials and Design, 2010, 31, 4, 1962-1970Finansiranje / projekti:
- Sinteza i osobine nanostrukturnih metalnih, intermetalnih i kompozitnih materijala (RS-MESTD-MPN2006-2010-142027)
DOI: 10.1016/j.matdes.2009.10.037
ISSN: 0261-3069
WoS: 000274314700048
Scopus: 2-s2.0-73049109405
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Rajković, Višeslava M. AU - Božić, Dušan AU - Jovanović, Milan T. PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3889 AB - High-energy milling was used for production of Cu-Al2O3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al2O3 powders served as starting materials. Milling of prealloyed copper powders promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. Hot-pressed compacts of composites obtained from 5 and 20 h milled powders were additionally subjected to the high-temperature exposure in argon at 800 degrees C for 1 and 5 h. Characterization of processed material was performed by optical and scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness, as well as density and electrical conductivity measurements. Due to nano-sized Al2O3 particles microhardness and thermal stability of composite processed from milled prealloyed powders are higher than corresponding properties of composites processed from the milled powder mixtures. The results were discussed in terms of the effects of different size of starting copper powders and Al2O3 particles on the structure, strengthening of copper matrix, thermal stability and electrical conductivity of Cu-Al2O3 composites. (C) 2009 Elsevier Ltd. All rights reserved. T2 - Materials and Design T1 - Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites VL - 31 IS - 4 SP - 1962 EP - 1970 DO - 10.1016/j.matdes.2009.10.037 ER -
@article{ author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.", year = "2010", abstract = "High-energy milling was used for production of Cu-Al2O3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al2O3 powders served as starting materials. Milling of prealloyed copper powders promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. Hot-pressed compacts of composites obtained from 5 and 20 h milled powders were additionally subjected to the high-temperature exposure in argon at 800 degrees C for 1 and 5 h. Characterization of processed material was performed by optical and scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness, as well as density and electrical conductivity measurements. Due to nano-sized Al2O3 particles microhardness and thermal stability of composite processed from milled prealloyed powders are higher than corresponding properties of composites processed from the milled powder mixtures. The results were discussed in terms of the effects of different size of starting copper powders and Al2O3 particles on the structure, strengthening of copper matrix, thermal stability and electrical conductivity of Cu-Al2O3 composites. (C) 2009 Elsevier Ltd. All rights reserved.", journal = "Materials and Design", title = "Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites", volume = "31", number = "4", pages = "1962-1970", doi = "10.1016/j.matdes.2009.10.037" }
Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2010). Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites. in Materials and Design, 31(4), 1962-1970. https://doi.org/10.1016/j.matdes.2009.10.037
Rajković VM, Božić D, Jovanović MT. Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites. in Materials and Design. 2010;31(4):1962-1970. doi:10.1016/j.matdes.2009.10.037 .
Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites" in Materials and Design, 31, no. 4 (2010):1962-1970, https://doi.org/10.1016/j.matdes.2009.10.037 . .