采用激光熔覆-离子渗硫复合新工艺在45钢表面制备减磨耐磨性能良好的自润滑涂层.采用扫描电子显微镜、原子力显微镜、白光共焦三维轮廓仪、X射线衍射仪、X射线光电子能谱仪分析涂层及磨损表面的形貌、成分及相组成.在球盘式摩擦磨损实验机上对比研究渗硫前后熔覆层在干摩擦条件下的摩擦磨损性能.结果表明,采用离子渗硫在高硬度镍基合金激光熔覆层表面生成了硫化物固体润滑膜层,渗硫层表面疏松多孔,与熔覆层结合紧密;经渗硫处理后激光熔覆层的耐磨减摩性能提高,对磨件的磨损也明显改善;磨损表面生成了由硫化物和氧化物组成的边界润滑膜.
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