通过扫描电镜和三维光学轮廓仪观察Ag/MeO(10)触头在直流19V、20 A和阻性载荷条件下操作50000次后的电弧侵蚀形貌.结果表明:三维光学轮廓仪可以提供更清晰和详细的表面侵蚀形貌信息.在相同的测试条件下,Ag/SnO2(10)触头的抗电弧侵蚀性能最强,而Ag/CuO(10)触头的抗电弧侵蚀性能最差.Ag/MeO(10)触头的电弧侵蚀形貌主要有三种类型.Ag/ZnO(10)和Ag/SnO2(10)的电弧侵蚀形貌主要是液体喷溅和汽化,Ag/CuO(10)和Ag/CdO(10)触头的电弧侵蚀形貌主要是材料从阳极到阴极的转移,而Ag/SnO2(6)In2O3(4)触头的电弧侵蚀形貌则既有液体喷溅和汽化又有材料的转移.此外,讨论不同Ag/MeO(10)触头的电弧形貌的形成过程和机理.
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