电触头是开关电器中的关键器件,它的好坏直接影响到开关电器的寿命问题.本文简要介绍了电弧对触头材料产生的几种可能影响,并以目前应用最广泛的银基触头材料为代表,详细叙述了Ag-Ni,Ag-W或Ag-WC,Ag-MeO以及Ag-C四个体系在电弧作用下产生的失效,并探讨了其机理.
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