石墨对镍基固体润滑涂层组织与性能的影响  

Effect of Graphite on Microstructure and Properties of Ni-Based Solid Lubrication Coatings

作　　者：李方坡[1] 王引真[1] 高海军[1] 潘蛟亮[1] 

机构地区：[1]中国石油大学(华东)机电工程学院,山东东营257061

出　　处：《金属热处理》2007年第11期52-55,共4页Heat Treatment of Metals

基　　金：东营市科学技术发展计划基金项目(2005126)

摘　　要：采用超音速火焰喷涂技术在45钢表面制备了含石墨和MoS2双组元润滑剂的Ni基固体润滑涂层,研究加入石墨(含量0%～9wt%)对涂层组织和性能的影响及双组元润滑剂在涂层中的相互作用。结果表明,随着石墨含量的增加,涂层中的孔隙增加,结合强度降低,摩擦系数和磨损率先下降后上升。石墨含量为3.0%时,石墨与MoS2的协调作用有利于保障涂层摩擦表面润滑相的连续形成,涂层摩擦系数为0.26,磨损率为0.82×10-3mg·s-1,减磨性最优。Four kinds of solid lubrication coatings containing graphite and MoS2 were produced on 45 steel substrate with high velocity oxygen fuel （HVOF） spraying.The influence of graphite content （0～9wt%） on the microstructure and properties of the coatings and interaction of lubrications were researched.The results show that the coating porosities increase,their binding strength decreases gradually and the friction coefficient and wear rate of the coatings decrease first and then in crease with the increase of graphite content.While the graphite content is 3.0%,the interaction of graphite and MoS2 is helpful for supplying continuous solid lubrication phases on the friction surface and leads to the best tribological property of all the coatings.

关 键 词：超音速火焰喷涂(HVOF) 固体润滑 石墨 摩擦磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]