US 11,655,524 B2
Copper alloy with excellent comprehensive performance and application thereof
Chaoyong Yang, Zhejiang (CN); Ning Li, Zhejiang (CN); Jiangang Li, Zhejiang (CN); Hongbin Zhao, Zhejiang (CN); Taisheng Yang, Zhejiang (CN); and Yaohua Zhou, Zhejiang (CN)
Assigned to NINGBO POWERWAY ALLOY MATERIAL CO., LTD., Zhejiang (CN)
Appl. No. 16/487,428
Filed by NINGBO POWERWAY ALLOY MATERIAL CO.,LTD., Zhejiang (CN)
PCT Filed Sep. 4, 2018, PCT No. PCT/CN2018/000311
§ 371(c)(1), (2) Date Aug. 20, 2019,
PCT Pub. No. WO2020/034049, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 201810939276.4 (CN), filed on Aug. 17, 2018.
Prior Publication US 2021/0062301 A1, Mar. 4, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C22C 9/02 (2006.01); C22F 1/08 (2006.01)
CPC C22C 9/02 (2013.01) [C22F 1/08 (2013.01)] 5 Claims
 
1. A copper alloy, consisting of the following components in percentage by weight:
0.4 wt %-2.0 wt % of Ni;
0.2 wt %-0.95 wt % of Sn;
0.02 wt %-0.25 wt % of P;
0.001 wt %-0.091 wt % of Si; and
the balance of Cu and unavoidable impurities,
wherein a microstructure of the copper alloy contains a Ni—P intermetallic compound and a Ni—Si intermetallic compound, wherein average particle diameters of the Ni—P intermetallic compound and the Ni—Si intermetallic compound are both within a range of 5 nm to 50 nm,
wherein the weight percentages of Ni, P, and Si satisfy: 3≤Ni/(P+Si)≤20, and the weight percentages of Si and P satisfy: 0.1≤Si/P≤10,
wherein the crystal orientations of a strip of the copper alloy satisfies: an area ratio of brass orientation {011}<211> with a deviation angle of less than 15° is 5% to 37%, and an area ratio of S-type orientation {123}<634> with a deviation angle of less than 15° is 5% to 30%.