采用电子束对等离子喷涂CoCrW涂层进行了重熔处理 ,对重熔前后CoCrW涂层的组织及其抗微动磨损性能进行了分析 .结果表明 ,电子束重熔消除了原等离子喷涂层的层间氧化物、孔隙和层状结构 ,重熔层与基体形成冶金结合 ,得到以钴基固溶体为基体 ,以复合碳化物为强化相的细晶组织 ,抗微动磨损性能是原等离子喷涂层的 13.3倍 . Electron beam plasma spraying CoCrW coating was remelted before and after remelting the CoCrW coating microstructure and anti-fretting wear performance analysis results show that electron beam remelting to eliminate the original plasma spray coating layer Intermetallic oxide, voids and lamellar structure. The remelted layer forms a metallurgical bond with the substrate to obtain a fine-grained microstructure with a cobalt-based solid solution as a matrix and a composite carbide as a reinforcing phase. The anti-fretting wear property is the same as the original plasma sprayed layer 13.3 times.