Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling
Само за регистроване кориснике
2009
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Copper-based composites were obtained using high energy milling. The inert gas-atomized prealloyed copper powder (average particle size - 30 μm) containing 2 wt.% Al, and the mixture of electrolytic copper powder (average particle size – 30 and 15 μm) with 4 wt.% comertial Al2O3 powders (average particle size –0.75μm) served as starting materials. These powders were separately milled in air up to 20 h in the planetary ball mill. Milling of prealloyed copper powder promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. It was calculated that by internal oxidation of 2 wt.% aluminum approximately 3.7 wt.% Al2O3 was generated in the copper matrix. Milled powders were treated in hydrogen at 400 °C for 1 h in order to eliminate copper oxides formed at the surface during milling. Compaction executed by hot-pressing was carried out in an argon atmosphere at 800 °C for 1 h under the pressure of 35 MPa. Compacts obtained from 5 and 20 h milled powders were ...additionally subjected to high-temperature exposure in argon at 800 °C for 1 and 5 h. The results were discussed in terms of the effects of different size of starting powder particles on structure, strengthening of copper matrix, thermal stability and electrical conductivity of the Cu - Al2O3 composite.
Кључне речи:
Cu-Al2O3 composite / mechanical alloying / internal oxidation / structure / microhardness / thermal stability / electrical conductivityИзвор:
Metalurgija, 2009, 15, 1, 45-52Издавач:
- Savez inženjera metalurgije Srbije
Финансирање / пројекти:
- Синтеза и особине наноструктурних металних, интерметалних и композитних материјала (RS-MESTD-MPN2006-2010-142027)
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Rajković, Višnja AU - Božić, Dušan AU - Popović, Miljana AU - Jovanović, Milan PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7299 AB - Copper-based composites were obtained using high energy milling. The inert gas-atomized prealloyed copper powder (average particle size - 30 μm) containing 2 wt.% Al, and the mixture of electrolytic copper powder (average particle size – 30 and 15 μm) with 4 wt.% comertial Al2O3 powders (average particle size –0.75μm) served as starting materials. These powders were separately milled in air up to 20 h in the planetary ball mill. Milling of prealloyed copper powder promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. It was calculated that by internal oxidation of 2 wt.% aluminum approximately 3.7 wt.% Al2O3 was generated in the copper matrix. Milled powders were treated in hydrogen at 400 °C for 1 h in order to eliminate copper oxides formed at the surface during milling. Compaction executed by hot-pressing was carried out in an argon atmosphere at 800 °C for 1 h under the pressure of 35 MPa. Compacts obtained from 5 and 20 h milled powders were additionally subjected to high-temperature exposure in argon at 800 °C for 1 and 5 h. The results were discussed in terms of the effects of different size of starting powder particles on structure, strengthening of copper matrix, thermal stability and electrical conductivity of the Cu - Al2O3 composite. PB - Savez inženjera metalurgije Srbije T2 - Metalurgija T1 - Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling EP - 52 IS - 1 SP - 45 VL - 15 UR - https://hdl.handle.net/21.15107/rcub_technorep_7299 ER -
@article{ author = "Rajković, Višnja and Božić, Dušan and Popović, Miljana and Jovanović, Milan", year = "2009", abstract = "Copper-based composites were obtained using high energy milling. The inert gas-atomized prealloyed copper powder (average particle size - 30 μm) containing 2 wt.% Al, and the mixture of electrolytic copper powder (average particle size – 30 and 15 μm) with 4 wt.% comertial Al2O3 powders (average particle size –0.75μm) served as starting materials. These powders were separately milled in air up to 20 h in the planetary ball mill. Milling of prealloyed copper powder promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. It was calculated that by internal oxidation of 2 wt.% aluminum approximately 3.7 wt.% Al2O3 was generated in the copper matrix. Milled powders were treated in hydrogen at 400 °C for 1 h in order to eliminate copper oxides formed at the surface during milling. Compaction executed by hot-pressing was carried out in an argon atmosphere at 800 °C for 1 h under the pressure of 35 MPa. Compacts obtained from 5 and 20 h milled powders were additionally subjected to high-temperature exposure in argon at 800 °C for 1 and 5 h. The results were discussed in terms of the effects of different size of starting powder particles on structure, strengthening of copper matrix, thermal stability and electrical conductivity of the Cu - Al2O3 composite.", publisher = "Savez inženjera metalurgije Srbije", journal = "Metalurgija", title = "Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling", pages = "52-45", number = "1", volume = "15", url = "https://hdl.handle.net/21.15107/rcub_technorep_7299" }
Rajković, V., Božić, D., Popović, M.,& Jovanović, M.. (2009). Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling. in Metalurgija Savez inženjera metalurgije Srbije., 15(1), 45-52. https://hdl.handle.net/21.15107/rcub_technorep_7299
Rajković V, Božić D, Popović M, Jovanović M. Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling. in Metalurgija. 2009;15(1):45-52. https://hdl.handle.net/21.15107/rcub_technorep_7299 .
Rajković, Višnja, Božić, Dušan, Popović, Miljana, Jovanović, Milan, "Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling" in Metalurgija, 15, no. 1 (2009):45-52, https://hdl.handle.net/21.15107/rcub_technorep_7299 .