Properties of dispersion hardened copper processed by internal oxidation in air
Abstract
The prealloyed copper powders containing different amount of aluminium (1, 2.5 and 3.5 mass.%) were milled for 5 h in a planetary ball mill to form alumina particles by internal oxidation in air. The powders were compacted by hot pressing in argon at 800 degrees C for 3 h. In the next step compacts were heat treated in argon at 800 degrees C for 5 h in order to determine their thermal stability via microhardness measurements. Compacts from as-received Cu-1, 2.5 and 3.5 mass.% A1 and non-alloyed electrolytic copper powders were also synthesized under the same condition. Compacts of milled powders before and after heat treatment exhibited considerably higher microhardness than compacts of non-alloyed electrolytic copper and as-received powders. The increase of microhardness and good thermal stability were ascribed to the small grain size and presence of fine and uniformly distributed alumina particles formed by internal oxidation during milling. The electrical conductivity of compacts wa...s above the minimum requirement limit for Cu-based alloys.
Keywords:
dispersion hardened copper / internal oxidation in air / high energy ball milling / grain sizeSource:
Kovove Materialy = Metallic Materials, 2006, 44, 3, 175-179Collections
Institution/Community
VinčaTY - JOUR AU - Rajković, Višeslava M. AU - Božić, Dušan AU - Jovanović, Milan T. PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3092 AB - The prealloyed copper powders containing different amount of aluminium (1, 2.5 and 3.5 mass.%) were milled for 5 h in a planetary ball mill to form alumina particles by internal oxidation in air. The powders were compacted by hot pressing in argon at 800 degrees C for 3 h. In the next step compacts were heat treated in argon at 800 degrees C for 5 h in order to determine their thermal stability via microhardness measurements. Compacts from as-received Cu-1, 2.5 and 3.5 mass.% A1 and non-alloyed electrolytic copper powders were also synthesized under the same condition. Compacts of milled powders before and after heat treatment exhibited considerably higher microhardness than compacts of non-alloyed electrolytic copper and as-received powders. The increase of microhardness and good thermal stability were ascribed to the small grain size and presence of fine and uniformly distributed alumina particles formed by internal oxidation during milling. The electrical conductivity of compacts was above the minimum requirement limit for Cu-based alloys. T2 - Kovove Materialy = Metallic Materials T1 - Properties of dispersion hardened copper processed by internal oxidation in air VL - 44 IS - 3 SP - 175 EP - 179 UR - https://hdl.handle.net/21.15107/rcub_vinar_3092 ER -
@article{ author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.", year = "2006", abstract = "The prealloyed copper powders containing different amount of aluminium (1, 2.5 and 3.5 mass.%) were milled for 5 h in a planetary ball mill to form alumina particles by internal oxidation in air. The powders were compacted by hot pressing in argon at 800 degrees C for 3 h. In the next step compacts were heat treated in argon at 800 degrees C for 5 h in order to determine their thermal stability via microhardness measurements. Compacts from as-received Cu-1, 2.5 and 3.5 mass.% A1 and non-alloyed electrolytic copper powders were also synthesized under the same condition. Compacts of milled powders before and after heat treatment exhibited considerably higher microhardness than compacts of non-alloyed electrolytic copper and as-received powders. The increase of microhardness and good thermal stability were ascribed to the small grain size and presence of fine and uniformly distributed alumina particles formed by internal oxidation during milling. The electrical conductivity of compacts was above the minimum requirement limit for Cu-based alloys.", journal = "Kovove Materialy = Metallic Materials", title = "Properties of dispersion hardened copper processed by internal oxidation in air", volume = "44", number = "3", pages = "175-179", url = "https://hdl.handle.net/21.15107/rcub_vinar_3092" }
Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2006). Properties of dispersion hardened copper processed by internal oxidation in air. in Kovove Materialy = Metallic Materials, 44(3), 175-179. https://hdl.handle.net/21.15107/rcub_vinar_3092
Rajković VM, Božić D, Jovanović MT. Properties of dispersion hardened copper processed by internal oxidation in air. in Kovove Materialy = Metallic Materials. 2006;44(3):175-179. https://hdl.handle.net/21.15107/rcub_vinar_3092 .
Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Properties of dispersion hardened copper processed by internal oxidation in air" in Kovove Materialy = Metallic Materials, 44, no. 3 (2006):175-179, https://hdl.handle.net/21.15107/rcub_vinar_3092 .