Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al
Апстракт
Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres.
Кључне речи:
copper matrix hardening / dispersion-hardened copper / high energy ball milling / internal oxidation in airИзвор:
Materials Science Forum, 2005, 494, 493-497Напомена:
- Current Research in Advanced Materials and Processes, 6th Conference of the Yugoslav-Materials-Research-Society, Sep 13-17, 2004, Herceg Novi, Montenegro
Колекције
Институција/група
VinčaTY - JOUR AU - Rajković, Višeslava M. AU - Božić, Dušan AU - Vracaric, D AU - Romhanji, E PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6540 AB - Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres. T2 - Materials Science Forum T1 - Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al VL - 494 SP - 493 EP - 497 DO - 10.4028/www.scientific.net/MSF.494.493 ER -
@article{ author = "Rajković, Višeslava M. and Božić, Dušan and Vracaric, D and Romhanji, E", year = "2005", abstract = "Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrolytic copper compacted under the same conditions, while the conductivity was 68% IACS. Also, it was found that the prealloyed compacts preserved much of the hardness after exposure to high temperature in inert atmospheres.", journal = "Materials Science Forum", title = "Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al", volume = "494", pages = "493-497", doi = "10.4028/www.scientific.net/MSF.494.493" }
Rajković, V. M., Božić, D., Vracaric, D.,& Romhanji, E.. (2005). Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al. in Materials Science Forum, 494, 493-497. https://doi.org/10.4028/www.scientific.net/MSF.494.493
Rajković VM, Božić D, Vracaric D, Romhanji E. Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al. in Materials Science Forum. 2005;494:493-497. doi:10.4028/www.scientific.net/MSF.494.493 .
Rajković, Višeslava M., Božić, Dušan, Vracaric, D, Romhanji, E, "Properties of dispersion-hardened copper made by internal oxidation of prealloyed copper powder containing 2.5wt. % Al" in Materials Science Forum, 494 (2005):493-497, https://doi.org/10.4028/www.scientific.net/MSF.494.493 . .