公开(公告)号：US4302514A

公开(公告)日：1981-11-24

申请号：US41559

申请日：1979-05-23

申请人： Masaru Kato ,  Hitoshi Takeuchi ,  Toshiaki Horiuchi

发明人： Masaru Kato ,  Hitoshi Takeuchi ,  Toshiaki Horiuchi

IPC分类号： H01H33/66 ,  C22C1/04 ,  H01H1/02 ,  H01H1/025 ,  B22F7/00

CPC分类号： C22C1/0425 ,  H01H1/0206 ,  Y10T428/1216 ,  Y10T428/12167 ,  Y10T428/12174

摘要： A contact for a vacuum interrupter has excellent characteristics of high withstand voltage, low melt bonding property, large current durability and low chopping current and is prepared by uniformly distributing, in a copper matrix, two kinds of high melting point metal powders having a melting point of higher than 1450.degree. C. which have different particle diameters of (1) 80-300 .mu.m and (2) less than 30 .mu.m. The low chopping current characteristic is imparted by incorporating more than 10 wt. % of the high melting point metal powder. The high melting point metal powder can be selected from the group consisting of Cr, W, Mo, Ir and Co.

摘要翻译： 真空断路器的接点具有高耐压，低熔接性，大电流耐久性和低切断电流的优良特性，通过在铜基体中均匀分布两种具有熔点的高熔点金属粉末 （1）80-300μm和（2）小于30μm的不同粒径的1450℃以上。 低切割电流特性通过掺入超过10wt。 ％的高熔点金属粉末。 高熔点金属粉末可以选自Cr，W，Mo，Ir和Co.