US 11,987,870 B2
Cu-based alloy powder
Tetsuji Kuse, Himeji (JP); Yoshikazu Aikawa, Himeji (JP); and Yuichi Nagatomi, Himeji (JP)
Assigned to Sanyo Special Steel Co., Ltd., Himeji (JP)
Appl. No. 17/621,530
Filed by Sanyo Special Steel Co., Ltd., Himeji (JP)
PCT Filed Jul. 17, 2020, PCT No. PCT/JP2020/027806
§ 371(c)(1), (2) Date Dec. 21, 2021,
PCT Pub. No. WO2021/015119, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 2019-135294 (JP), filed on Jul. 23, 2019.
Prior Publication US 2022/0349029 A1, Nov. 3, 2022
Int. Cl. C22C 9/00 (2006.01); B22F 1/00 (2022.01); B22F 1/05 (2022.01); B22F 1/06 (2022.01); B22F 1/065 (2022.01); C22C 9/06 (2006.01)
CPC C22C 9/00 (2013.01) [B22F 1/00 (2013.01); B22F 1/05 (2022.01); B22F 1/06 (2022.01); B22F 1/065 (2022.01); C22C 9/06 (2013.01); B22F 2301/10 (2013.01); B22F 2304/10 (2013.01)] 5 Claims
 
1. A powder made of a Cu-based alloy, wherein the Cu-based alloy consists of:
an element M being one or more elements selected from Cr, Fe, Ni, Zr, and Nb: 0.1% by mass or more and 10.0% by mass or less,
Si: more than 0% by mass and 0.20% by mass or less,
P: more than 0% by mass and 0.10% by mass or less, and
S: more than 0% by mass and 0.10% by mass or less,
the balance being Cu and inevitable impurities,
wherein D50/TD being a ratio of an average particle diameter D50 of the powder to a tap density TD of the powder is 0.5×10−5·m4/Mg or more and 20×10−5·m4/Mg or less, and
wherein the powder has a sphericity of 0.80 or more and 0.95 or less.