PEEK450 FC30与SiC陶瓷在海水润滑下的摩擦磨损特性研究

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。

Tribological Behavior of Carbon Fiber reinforced PEEK Sliding Against

As the candidate materials of friction pairs in seawater hydraulic piston pump, the tribological characteristics of 30 wt% carbon fiber reinforced PEEK (PEEK450 FC30) sliding against engineering ceramic SiC under seawater lubrication are investigated on the MCF 10 friction and wear test machine. Effects of pressure, sliding velocity 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.