公开(公告)号：US5338505A

公开(公告)日：1994-08-16

申请号：US997216

申请日：1992-12-28

申请人： Koji Tsuji ,  Yoshinbou Takegawa ,  Hayato Inada ,  Shuji Yamada

发明人： Koji Tsuji ,  Yoshinbou Takegawa ,  Hayato Inada ,  Shuji Yamada

IPC分类号： C22C1/04 ,  C22C5/06 ,  H01B1/02 ,  H01H1/023 ,  H01H1/0237 ,  H01H11/04 ,  B22F3/12

CPC分类号： H01H1/0237

摘要： A silver base electrical contact material with superior resistance to arc erosion along with improved wear and welding resistance. The contact material consists essentially of 0.5 to 39.9 wt % of nickel, 0.14 to 7.0 wt % of nickel oxides, and balance silver. The material contains not less than 0.4 wt % of nickel responsible for constituting minute nickel and nickel particles which have a particle size of not more than 1 .mu.m and are dispersed in a silver matrix for strengthening the material to give improved wear and welding resistance. The dispersed minute nickel oxide particles are included to stabilize arcing occurring at the time of opening and closing contacts in such a manner as to anchor one end of an arc substantially at any immediately available point over the entire contact surface as soon as the arcing occurs, thereby preventing the arc end from moving violently across or beyond the contact surface and therefore minimizing arc related damages or arc erosion. The contact material is made in accordance with a novel method which can disperse the minute nickel and nickel oxide particles in adequate quantities and eliminate the inclusion of undesired bulk and coarse nickel particles which would otherwise deteriorate the contact properties.

摘要翻译： 银基电接触材料，具有优异的电弧侵蚀性能，同时具有改善的耐磨性和耐焊接性。 接触材料基本上由0.5至39.9重量％的镍，0.14至7.0重量％的镍氧化物和余量的银组成。 该材料含有不少于0.4重量％的镍，其负责构成粒径不大于1μm的微小镍和镍颗粒，并分散在银基质中以加强材料以提供改善的耐磨性和耐焊接性。 包括分散的微小氧化镍颗粒以稳定在开启和闭合触点时发生的电弧，以便在发生电弧时，将弧的一端基本上固定在整个接触表面上的任何立即可用的点处， 从而防止电弧端部猛烈地横过或超过接触表面移动，从而最小化电弧相关的损坏或电弧侵蚀。 接触材料根据可以分散微量镍和氧化镍颗粒足够量的新方法制造，并且消除了包含不希望的体积和粗大的镍颗粒，否则会使接触性能变差。