CPC C22C 33/0264 (2013.01) [B22F 1/05 (2022.01); B22F 1/052 (2022.01); B22F 1/06 (2022.01); B22F 1/10 (2022.01); B22F 1/17 (2022.01); B22F 3/16 (2013.01); B22F 3/24 (2013.01); B22F 9/04 (2013.01); C22C 33/0235 (2013.01); C22C 38/16 (2013.01); B22F 2003/248 (2013.01); B22F 2301/35 (2013.01); B22F 2302/25 (2013.01); Y10T 428/12014 (2015.01); Y10T 428/12611 (2015.01)] | 6 Claims |
1. An iron based powder consisting of particles of reduced copper oxide diffusion bonded to the surface of an atomized iron powder,
wherein the content of copper is 1-5% by weight of the iron based powder,
wherein the iron based powder is produced by providing an atomized iron powder with an oxygen content of 0.3-1.2% by weight and with a carbon content of 0.1-0.5% by weight, and subjecting the atomized iron powder and a copper containing powder to a reduction annealing process in a reducing atmosphere to obtain the iron based powder, and
wherein the iron based powder has a maximum particle size of 250 μm, at least 75% is below 150 μm and at most 30% is below 45 μm, wherein the iron based powder has an apparent density of at least 2.70 g/cm3 and an oxygen content of at most 0.16% by weight, and wherein other impurities are at most 1% by weight of the iron based powder.
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