The effect of contact resistance on electrical contact materials was analysis in this paper. The mathods which can be used to avoid electrical contact materials invalidation were summarized.

• 分析了电触点材料接触电阻产生的原因、影响因素以及电触点材料常用金属元素的腐蚀行为。概述了降低电触点材料接触电阻、防止触点元件失效的方法。