孙荣禄,牛伟,雷贻文,唐英

• 1:天津工业大学机械工程学院
• 2:天津市现代机电装备技术重点实验室

摘要(Abstract)：

采用激光熔覆技术在TC4钛合金表面制备以反应合成TiB2和TiC颗粒为增强相的Ni基复合涂层,利用УТИТВ-100型销-盘摩擦磨损试验机研究了激光熔覆层在真空(10-5Pa)中的干滑动摩擦磨损性能,利用光学显微镜和扫描电子显微镜观察了摩擦偶件的磨损表面形貌,讨论了激光熔覆层的磨损机制。结果表明,激光熔覆层的摩擦系数在0.25～0.5之间,明显低于TC4合金的摩擦系数(0.45～0.8),磨损体积约为TC4合金的40%。随法向载荷和滑动速度的增加,激光熔覆层的磨损体积增加,激光熔覆层的磨损机制主要为粘着磨损和粘附转移物引起的磨粒磨损。

关键词(KeyWords)： 激光熔覆;反应合成;TiB2-TiC/Ni复合涂层;摩擦磨损性能

Abstract:

Keywords:

基金项目(Foundation): 天津市应用基础及前沿技术研究计划项目(11JCZDJC21400);; 教育部博士点基金项目(20091201110002)

作者(Author): 孙荣禄,牛伟,雷贻文,唐英

DOI: 10.13289/j.issn.1009-6264.2012.05.010

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