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采用反应合成法制备了不同Sn02含量的AgCuOSn02电接触材料.采用FQR-7501型涡流电导率仪测量抛光AgCuOSn02的电导率.用扫描电镜(SEM)观察和研究了AgCuOSn02电接触表面的侵蚀形貌.JF04C直流数字电阻测试仪用于进行10 000点测试.结果表明,AgCuO(10)SnO2(5)和AgCuO(10)SnO2(8)电触头材料在U=12V和1=15A时的接触电阻小于1.3mn,波动最小;当I=10A时,AgCuO(10)SnO2(x)(x=2,5,8)的熔焊力小于8cN,AgCuO(10)SnO2(5)电触头的熔焊力较小,当电流增大时熔焊力较为稳定;当AgCuOSn02电触头材料发生电弧侵蚀时,材料从阳极向阴极转移.随着Sn02含量的增加,材料传输过程中的损耗得到抑制和降低.所转移的电触头表面有少量的气孔和微裂纹,表面形貌较为平坦.“,”AgCuOSnC2 electrical contact materials with different Sn02 contents were prepared by reaction synthesis.FQR-7501 eddy current conductivity meter was used to measure the conductivity of the polished AgCuOSnC2.The erosion morphology of the surface of the AgCuOSnC2 electrical contact was observed by scanning electron microscope(SEM).The JF04C DC digital resistance tester was used to carry out 10 000 dot tests.The results show that the contact resistance of AgCuO(10)SnO2(5)and AgCuO(10)SnC2(8)electric contact materials is lower than 1.3 mЛ at U = 12V and I= 15 A,and the fluctuation is the smallest;when I = 10 A,the welding force of AgCuO(10)SnO2(x)(x = 2,5,8,％,mass fraction)is less than 8 cN,and the welding force of AgCuO(10)SnO2(5)electric contact is small and stable when the current increases;when the arc erosion of AgCuOSnC2 electric contact materials occurs,the material transfer way is from anode to cathode.With the increasing of SnC2 content,the loss in the process of material transfer is restrained and reduced.There are a few pores and microcracks on the surface of the transferred electrical contact,and the surface morphology is relatively flat.