摘要
针对MoS2基涂层应用范围受限的问题,以稀土氟化物CeF3为添加剂,对MoS2基润滑涂层进行改性处理,采用喷涂法制备不同CeF3添加量(质量分数0,0.5%,1.0%,2.0%,3.0%,4.0%,6.0%)的改性粘接固体润滑涂层。利用HSR-2M型高速往复式摩擦磨损试验机考察了试样在不同预处理方式(基体粗糙度、预热温度)、不同测试条件(载荷、转速)下的摩擦学性能。结果表明:试样基体表面粗糙度Ra为0.4μm,预热温度为100℃时涂层的摩擦学性能最优;当CeF3的含量为3.0%时,添加剂与固体润滑剂的协同作用较优,此时摩擦系数和磨损量分别为0.207,0.203 mm3;改性涂层的主要磨损机理为磨粒磨损、黏着磨损。
MoS2-based lubricating coatings were modified using rare earth fluoride CeF3,and then the modified bonding solid lubricating coatings with different CeF3 addition contents( 0,0.5%,1. 0%,2. 0%,3. 0%,4. 0% and 6. 0% of mass fractions) were prepared by spraying method. The tribological properties of the samples under different pretreatment methods( substrate roughness,preheating temperature) and different test conditions( load,speed) were investigated by HSR-2 M high-speed reciprocating friction and wear tester. Results showed that the tribological properties of the coating were optimal when the substrate roughness was 0.4 μm and the preheating temperature was 100 ℃ . The synergistic effect of the additive and the solid lubricant was superior when the content of CeF3 was 3.0%,and the as-obtained coatings possessed a friction coefficient of 0.207 and a wear volume of 0.203 mm3. Furthermore,the main wear mechanisms of the modified coatings were abrasive wear and adhesive wear.
作者
程蓓
李迎春
邱明
张亚涛
许艳雷
CHENG Bei;LI Ying-chun;QIU Ming;ZHANG Ya-tao;XU Yan-lei(Institute of Electrical and Mechanical Services,Henan University of Science and Technology,Luoyang 471003,China;Advanced Machinery Equipment Manufacturing Collaborative Innovation Center in Henan Province,Henan University of Science and Technology,Luoyang 471003,China)
出处
《材料保护》
CAS
CSCD
北大核心
2019年第10期15-19,35,共6页
Materials Protection
基金
河南省科技创新杰出人才计划项目(154200510013)资助
关键词
MoS2基润滑涂层
CeF3改性
摩擦学性能
表面粗糙度
预热温度
载荷
转速
MoS2-based lubricating coating
CeF3 modifying
tribological properties
surface roughness
preheating temperature
load
rotating velocity
