发明名称 |
HIGH STRENGTH Cu-Ni-Co-Si BASED COPPER ALLOY SHEET MATERIAL AND METHOD FOR PRODUCING THE SAME, AND CURRENT CARRYING COMPONENT |
摘要 |
A copper alloy sheet material comprises (by mass %) from 2.50 to 4.00% in total of Ni and Co, from 0.50 to 2.00% of Co, from 0.70 to 1.50% of Si, from 0 to 0.50% of Fe, from 0 to 0.10% of Mg, from 0 to 0.50% of Sn, from 0 to 0.15% of Zn, from 0 to 0.07% of B, from 0 to 0.10% of P, from 0 to 0.10% of REM, from 0 to 0.01% in total of Cr, Zr, Hf, Nb and S, the balance Cu and unavoidable impurities. A number density of coarse secondary phase particles (particle diameter of 5 mm or more) is 10 per mm2 or less. A number density of fine secondary phase particles (particle diameter of from 5 to 10 nm) is 1.0·109 per mm2 or more. A Si concentration in the parent phase is 0.10% by mass or more. |
申请公布号 |
US2015357074(A1) |
申请公布日期 |
2015.12.10 |
申请号 |
US201414762479 |
申请日期 |
2014.02.10 |
申请人 |
DOWA METALTECH CO., LTD. |
发明人 |
KIMURA Takashi;KAMADA Toshiya;GAO Weilin;SASAKI Fumiaki;SUGAWARA Akira |
分类号 |
H01B1/02;C22C9/06;C22F1/08 |
主分类号 |
H01B1/02 |
代理机构 |
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代理人 |
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主权项 |
1. A copper alloy sheet material comprising a chemical composition containing from 2.50 to 4.00% in total of Ni and Co, from 0.50 to 2.00% of Co, from 0.70 to 1.50% of Si, from 0 to 0.50% of Fe, from 0 to 0.10% of Mg, from 0 to 0.50% of Sn, from 0 to 0.15% of Zn, from 0 to 0.07% of B, from 0 to 0.10% of P, from 0 to 0.10% of REM (rare earth elements), from 0 to 0.01% in total of Cr, Zr, Hf, Nb and S, the balance of Cu, and unavoidable impurities, all in terms of percentage by mass; containing secondary phase particles present in a parent phase, in which a number density of coarse secondary phase particles having a particle diameter of 5 μm or more is 10 per mm2 or less, and a number density of fine secondary phase particles having a particle diameter of from 5 to 10 nm is 1.0×109 per mm2 or more; and having an Si concentration in the parent phase of 0.10% by mass or more. |
地址 |
Tokyo JP |