| 发明名称 |
Electrical Contact for Vacuum Interrupter and Process for Producing Same |
| 摘要 |
In an electrical contact in which aggregation phases including Cu are dispersed in a matrix phase including Mo, Cr, and Cu, a maximum grain size of the aggregation phases falls in a range of 4 to 20 μm and, when the total Cu content in the electrical contact is denoted by Wt, the Cu content in the matrix phase is expressed by C×Wt, where C ranges from 0.54 to 0.81. A process for producing an electrical contact including Mo, Cr, and Cu includes a step of compacting mixed Mo and Cr powders, thus forming a powder-compression compact and a step of making the powder-compression compact infiltrated with molten Cu. |
| 申请公布号 |
US2016141126(A1) |
申请公布日期 |
2016.05.19 |
| 申请号 |
US201414900240 |
申请日期 |
2014.09.05 |
| 申请人 |
Hitachi, Ltd. |
发明人 |
KIKUCHI Shigeru;TOMIYASU Kunihiko;TSUCHIYA Kenji;SATO Takashi;MORITA Ayumu |
| 分类号 |
H01H33/664;C22C27/04;C22C30/02;B22F3/26;B22F1/00;B22F5/12;B22F3/02;H01H33/666;C22C9/00 |
主分类号 |
H01H33/664 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An electrical contact in which aggregation phases including Cu are dispersed in a matrix phase including Mo, Cr, and Cu, wherein:
a maximum grain size of the aggregation phases falls in a range of 4 to 20 μm, and
when the total Cu content in the electrical contact is denoted by Wt, the Cu content in the matrix phase is expressed by C×Wt, where C ranges from 0.54 to 0.81. |
| 地址 |
Tokyo JP |
