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中文摘要：
采用化学共沉淀法和高能球磨法制备纳米Ag-12%SnO2混合粉末,用等离子喷涂法将混合粉喷涂在Cu基表面,制备纳米复合Ag/SnO2涂层。测试涂层的物理性能和真空条件下的电性能,利用SEM观察分析放电后的表面组织结构。结果表明,纳米复合Ag/SnO2涂层越厚,密度越小,电阻率越大,而硬度与SnO2分布状况有关;涂层表面平整度影响耐电压强度值的分布;纳米复合Ag/SnO2涂层的分散电弧性能好,电弧烧蚀速率小。
英文摘要：
Nanocomposite Ag/SnO2 coating was prepared on pure Cu-surface by plasma spraying using the Ag-12%SnO2 mixed powder fabricated by chemical coprecipitation and high-energy ball milling.The physical property and electrical property were tested in vacuum the surface structure was observed and analyzed by SEM.The results show that the thicker nanocomposite Ag/SnO2 coating is,the smaller density is,the larger resistivity is,the higher the breakdown strength is.The hardness is related to the distribution of SnO2.The distribution of breakdown strength values is connected with coating surface roughness.The arc of nanocomposite Ag/SnO2 coating is dispersive and the arc erosion rate is low.
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