碳纤维增强树脂基复合材料在低温条件下的
微动摩擦磨损性能

doi:10.16183/j.cnki.jsjtu.2018.05.016

摘要/Abstract

摘要： 在FTM200型摩擦磨损试验机上，以PH13-8Mo不锈钢为配副件，采用正交试验方法在低温-45，-20 ℃以及室温条件下探讨了法向载荷、微动频率和微动振幅及试验时间对碳纤维增强环氧树脂基复合材料微动摩擦磨损性能的影响.结果表明，法向载荷、微动频率和振幅、试验时间以及温度对摩擦系数的影响均非常显著.在-45 ℃时，复合材料的摩擦系数均高于室温时的摩擦系数.法向载荷和温度对复合材料磨损量的影响显著.在相同的温度下，复合材料磨损量随法向载荷的增大而增加；在相同的法向载荷下，-45 ℃时，复合材料的磨损量较室温时的大，其磨损区域萌生出较多的微动裂纹，疲劳剥落现象较明显，其微动磨损机制以疲劳磨损为主；而在室温下，其磨损表面主要为表面树脂的刮痕以及少量的微动裂纹，其微动磨损机制为磨粒磨损.

关键词: 碳纤维复合材料；环氧树脂；低温；微动磨损；磨损机制

Abstract: The FTM200 friction and wear tester was used and the PH13-8Mo stainless steel was taken as the friction couple and an orthogonal experiment was applied to studying the influences of normal load, fretting frequency, fretting amplitude and test time on the tribological property of carbon fiber reinforced epoxy resin matrix composites at -45 ℃, -20 ℃ and room temperature. The results showed that normal load, fretting frequency, fretting amplitude, test time and temperature affected the friction coefficient very significantly. Friction coefficients of the samples at -45 ℃ were higher than that at room temperature, for the matrix was friable under low temperature and the components were peeled off more easily in the wear process, resulting in increase of wear rate. The influence of normal load and temperature on the wear of composite was more obvious. Under the same temperature, the wear volume of composite increased with the increase of the load. Under the same load, the wear volume of composite at -45 ℃ was larger than that at room temperature, indicating that the fretting and the spalling fatigue occurred more easily. At room temperature, the surface scratching of the composite and some cracks were mainly characterized. The fretting wear mechanism of the carbon fiber reinforced epoxy resin-based composites was abrasive wear and fatigue wear, while the wear mechanism of the material at low temperature mainly focused on fatigue wear.

Key words: carbon fiber composites; epoxy resin; low temperature; fretting wear; wear mechanism

中图分类号:

薛超凡1，于敏1，姚举禄2，姬科举1，戴振东1. 碳纤维增强树脂基复合材料在低温条件下的微动摩擦磨损性能[J]. 上海交通大学学报, 2018, 52(5): 604-611.

1. Institute of Bio-Inspired Structure and Surface Engineering of College of Astronautics,. Fretting Wear Characteristics of Carbon Fiber Reinforced Epoxy Resin Matrix Composites in Low Temperature[J]. Journal of Shanghai Jiao Tong University, 2018, 52(5): 604-611.

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