论文部分内容阅读
迄今为止的触点材料,一般知道的有银及银—镍系合金、银—钨系合金、银—氧化镉系合金,但纯银容易时效软化,在耐蚀性上有问题而且缺乏机械特性和耐电弧特性。银—镍合金耐焊接性能不好;银—钨系合金在耐磨性及接触电阻上尚有不足之处。另一方面,由于银—氧化镉系合金,不但电气性能好,还具有显著的耐磨性、接触电阻,耐焊接性等特性,作为触点材料广泛地被应用于通讯用继电器、小型继电器、开
Silver and silver-nickel alloy, silver-tungsten alloy and silver-cadmium alloy have been conventionally known as contact materials. However, pure silver tends to age and soften, have problems in corrosion resistance and lack mechanical properties And arc resistance. Silver - nickel alloy welding performance is not good; silver - tungsten alloy wear resistance and contact resistance there are deficiencies. On the other hand, the silver-cadmium oxide-based alloy not only has good electrical properties but also has remarkable wear resistance, contact resistance and weldability. As a contact material, the silver-cadmium alloy is widely used in communication relays, small relays, open