PEEK450-FC30与SiC陶瓷在海水润滑下的摩擦磨损特性研究  

Tribological Behavior of Carbon Fiber-reinforced PEEK Sliding Against Engineering Ceramic SiC Lubricated with Seawater

作　　者：廖伍举[1] 聂松林[1] 李雷[1] 张振华[1] 袁劭华 

机构地区：[1]北京工业大学机电学院,北京100124

出　　处：《液压与气动》2015年第8期16-19,共4页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51075007;51375018);国家863计划(2012AA091103);北京市人才强教计划(CIT&TCD20130316)

摘　　要：碳纤维增强聚醚醚酮PEEK450-FC30与工程陶瓷SiC软硬组合作为海水柱塞泵关键摩擦副备选材料,利用MCF-10摩擦磨损试验机对其在海水润滑下的摩擦磨损特性进行试验研究,探讨接触压力、滑动转速对材料磨损率和摩擦系数的影响规律。试验结果表明：在一定范围内的滑动速度、接触压力下,该摩擦副呈现出较小的磨损率和摩擦系数。当滑动速度在0.5~1.5 m/s之间,接触压力为1.33 MPa时,磨损率最小。通过扫描电子显微镜观察摩擦副磨损表层发现,在海水润滑下,SiC磨损并不明显,而PEEK450-FC30的磨损主要是以塑性涂抹为特征的粘着和SiC表面粗糙峰引起的机械犁耕。研究结果对水液压元件的选材具有十分重要的指导作用。As the candidate materials of friction pairs in seawater hydraulic piston pump, the tribological character- istics of 30 wt% carbon fiber-reinforced PEEK （PEEK450-FC30） sliding against engineering ceramic SiC under seawater lubrication are investigated on the MCF-IO friction and wear test machine. Effects of pressure, sliding ve- locity on the material the influence law of wear rate and friction coefficient is investigated. It is discovered that, within a certain range of the sliding velocity and contact pressure, wear rate and friction coefficient of the friction pair show very low. Especially, in a wide range of velocity（0. 5 ～ 1.5 m/s） , when the pressure is 1.33 MPa, the wear rate is the lowest. Besides, the worn surfaces are analyzed by scanning electron microscope to elucidate the mechanism of friction and wear. It is considered that in this research, no noticeable wear of SiC can be found while the wear of PEEK450-FC30 arises mainly from material transfer caused by adhesion and mechanical plough. The research results will play a very important role in the material selection of water hydraulic components.

关 键 词：工程陶瓷SiC 聚醚醚酮 海水润滑 摩擦磨损 

分 类 号：TH137[机械工程—机械制造及自动化]