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电接点材料种类较多,我们分析过的有银及其合金,铂及其合金,金基合金,钯基合金和铁基合金等。有的表面镀一层金属如银基合金镀金;有的为复合金属,如铂及其合金与铜铍合金组成的双金属片,有的前段为贵金属接点材料,后段为铜合金铆合在一起。有的电接点材料表面镀一层合金,如镀Cu—Ni,Au—Ni合金,还有电镀双层金属,像镀Ni再镀Au……。现着重介绍如下几个问题:
There are many types of electrical contact materials, we have analyzed silver and its alloys, platinum and its alloys, gold-based alloys, palladium-based alloys and iron-based alloys. Some of the surface is plated with a layer of metal such as silver-based alloy gold plating; some are composite metal, such as platinum and its alloys and copper beryllium alloy bimetal, and some before the precious metal contact material, the latter part of the copper alloy riveted together. Some electric contact material surface coated with an alloy, such as Cu-Ni plating, Au-Ni alloy, as well as plating double-layer metal, such as Ni plating and then plating Au ....... Now highlight the following issues: