粘结PTFE基固体润滑涂层在油润滑下的摩擦学性能  

Friction and Wear Behavior of Polytetrafluoroethylene Bond- ed Solid Lubricating Coaling under Oil Lubrication

作　　者：杨瑞杰[1,2] 冶银平[2] 万宏启[2] 周惠娣[2] 陈建敏[2] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000 [2]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000

出　　处：《材料保护》2011年第8期66-68,91,共3页Materials Protection

基　　金：国家973计划(2007CB607601);国家创新研究群体科学基金(50421502)资助项目

摘　　要：为了使粘结固体润滑涂层广泛应用于高新技术领域,探讨了不同滑移速度和载荷下聚酰亚胺粘结聚四氟乙烯(PTFE)基固体润滑涂层干摩擦和油润滑时的摩擦磨损性能,并对涂层与油复合润滑的机理进行了初步探讨。结果表明:随载荷、滑移速度变化,该粘结固体润滑涂层干摩擦和油润滑下的摩擦系数均变化不大;油润滑下涂层的摩擦系数明显低于干摩擦下的;在低载(320 N)、低速(1.55 m/s)下润滑油使涂层表现出很好的摩擦磨损性能,但在高载(620 N)、高速(2.58 m/s)下润滑油反而会使涂层的摩擦磨损性能降低。The friction and wear behavior of polytetrafluoroethylene (PTFE) based bonded solid lubricating coating under dry sliding and oillubricated conditions was evaluated,and the lubrication mechanism was primarily explored. Results show that PTFE-based bonded solid lubricating coating has a much lower friction coefficient under oil lubrication than under dry sliding, and the friction coefficients under both dry sliding and oil-lubricated conditions vary slightly with varying load and sliding velocity. Under a relatively low load (320 N) and sliding velocity ( 1.55 m/s) , oil lubrication helped to reduce the friction and wear of the PTFE-based bonded solid lubricating coating. However, under a relatively high load (620 N) and sliding velocity (2.58 m/s), oil lubrication led to worsened friction and wear behavior of the coating.

关 键 词：粘结固体润滑涂层 PTFE 摩擦磨损 油润滑 干摩擦 

分 类 号：TH117.1[机械工程—机械设计及理论]