MoS_2含量对Ni基固体润滑涂层性能的影响  

Influence of MoS_2 content on properties of self-lubricating nickel-base coatings

作　　者：李方坡[1] 王引真[1] 潘蛟亮[1] 高海军[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：《材料热处理学报》2007年第4期135-138,共4页Transactions of Materials and Heat Treatment

基　　金：东营市科学技术发展计划项目(2005126)

摘　　要：采用超音速火焰(HVOF)喷涂的方法在45钢表面制备四种含有MoS2的镍基固体润滑涂层,并研究了MoS2含量对涂层组织和性能的影响。结果表明,MoS2作为一种软质润滑相存在涂层中,能显著降低涂层的摩擦系数和磨损率;随着MoS2含量的增加,涂层中的润滑相和孔隙均增加,而显微硬度和结合强度却呈明显下降趋势。当MoS2含量为6.0%时,涂层的磨损率为0.38×10-3mg.s-1,耐磨性最优。Four types of solid lubrication coatings containing MoS2 were sprayed on the steel substrate by high velocity oxygen fuel （HVOF） spraying. The influence of MoS2 content on microstructure and properties of the coatings was studied, The results show that MoS2 greatly decreases friction coefficient and wear rate of the coatings. With the increase of MoS2, porosity and lubricating phase in the coatings increases while micro- hardness and bonding strength decreases greatly. The wear rate decreases to 0. 38 × 10^- 3 mg· s^-1 and the best wear resistance is obtained for the coating with MoS2 of 6.0wt% in the studied coatings.

关 键 词：超音速火焰喷涂 MOS2 固体润滑 涂层 

分 类 号：TG174.44[金属学及工艺—金属表面处理]