摘要
以Ni包MoS2为润滑剂,Ni60粉末为基体,利用超音速火焰喷涂技术制备镍基固体涂层,研究了Ni包MoS2对Ni60涂层和Ni60/MoS2涂层的显微组织、力学性能以其摩擦磨损性能的影响,并探讨载荷对Ni60/MoS2涂层摩擦磨损性能的影响,采用扫描电子显微镜观察涂层的磨损表面形貌并分析其磨损机制.结果表明,Ni包MoS2的加入可以降低Ni60涂层的结合强度和显微硬度,使其摩擦系数和磨损率明显降低;Ni60/MoS2涂层的摩擦系数与载荷无关,其磨损率随载荷增加而增大;Ni60涂层的磨损机制主要为疲劳磨损和黏着磨损,Ni包MoS2的加入减少了Ni60/MoS2涂层的黏着磨损.
Nickel-based solid lubrication coatings containing MoS2 coated with nickel were produced on the steel substrate with High Velocity Oxygen Fuel spraying. The lubricant was MoS2 coated with nickel, the base material of coating was Ni60. The influence of MoS2 on microstructures, mechanical and tribological properties of coating was studied. SEM was employed to analyze the morphologies of coatings. The effects of load on the friction and wear behaviors of coating were studied. The results show that the coating with MoS2 coated with nickel exhibited better selflubrication performance despite mechanical properties weakened. The friction coefficient of Ni60/MoS2 coating was independent on the load. With the increase of the load, the wear resistance lowered. The main wear mechanism of Ni60 coating was adhesive and fatigue wear. Ni60/MoS2 coating reduced the adhesive wear due to existence of MoS2.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2008年第3期225-229,共5页
Tribology
基金
东营市科学技术发展计划资助项目(2005126)
