利用一种新型的超音速等离子喷涂方法制备了稀土氧化物掺杂CoCrW涂层.通过X射线衍射仪、接触表面形貌仪、显微硬度测试仪、多功能摩擦磨损试验机和具有EDS能谱的环境扫描电子显微镜对涂层的相结构、表面形貌、显微硬度、摩擦磨损性能进行了研究.实验结果显示,稀土氧化物掺杂涂层具有很高的显微硬度和优越的摩擦学性能.同时,对涂层的摩擦和磨损机理进行了研究. A rare earth oxide-doped CoCrW coating was prepared by a novel supersonic plasma spraying method. The surface morphology of the coating was characterized by X-ray diffraction (XRD), surface topography, microhardness tester, multifunctional friction and wear tester, The phase structure, surface morphology, microhardness and friction and wear properties of the coating were studied by means of environmental scanning electron microscope.The experimental results show that the rare earth oxide doped coating has high microhardness and excellent tribology At the same time, the friction and wear mechanism of the coating were studied.