火焰喷涂ETFE涂层的干摩擦磨损性能研究  

Friction and Wear Behavior of Flame Sprayed ETFE Coating

作　　者：李亚东[1] 李玉飞[1] 朱忠诚[1] 白宝丰[1] 张永海[1] 

机构地区：[1]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450002

出　　处：《摩擦学学报》2011年第1期45-49,共5页Tribology

基　　金：河南省基础与前沿技术研究计划项目(102300410111)资助~~

摘　　要：采用火焰喷涂技术制备了乙烯-四氟乙烯共聚物(ETFE)涂层.利用红外光谱仪(FTIR)、差示扫描量热仪(DSC)及摩擦磨损试验机考察了涂层的结构、热性能及摩擦学性能,并采用扫描电子显微镜(SEM)对涂层的磨损表面形貌进行分析.结果表明:ETFE粉末在火焰喷涂过程中未发生氧化、降解反应;在摩擦载荷为20～120N及摩擦速度为20～120r/min的干摩擦条件下,涂层摩擦系数为0.25～0.34,磨损量为0.0068～0.1578g/N.m);SEM分析表明涂层的磨损机制主要为塑性变形、疲劳磨损和轻微的黏着磨损.Ethylene Tetrafluoroethylene（ETFE） coating was prepared by flame spraying.Fourier transform infrared spectroscopy（FTIR） was used to characterize polymer degradation.The melt behavior of ETFE coating were investigated by differential scanning calorimeter（DSC）.The friction and wear behaviors of the ETFE coating were examined using a MMW-1 test machine.The worn surfaces were investigated by scanning electron microscopy（SEM） and the wear mechanism was discussed.The results showed that the ETFE powder had no oxidation or degradation during flame spraying.Under the conditions of load at 20~120N and sliding speed at 20~120 r/min,the friction coefficient were from 0.250 6 to 0.344 8,and wear mass losses of coating from 0.0068g to 0.1578g,The wear mechanisms of the ETFE coating was dominated by fatigue,plastic deformation and adhesion wear in sliding against steel counterpart under dry sliding condition.

关 键 词：火焰喷涂 ETFE 涂层 摩擦磨损 

分 类 号：TH117.3[机械工程—机械设计及理论]