Effect of Counterpart Surface Roughness on the Tribological Behavior of Carbon Fiber Reinforced Polyamide 1010 Composites
偶件表面粗糙度对碳纤维增强尼龙复合材料摩擦学性能的影响

The dry sliding friction and wear behavior of carbon fiberreinforced polyamide 1010-based composites in sliding against AISI1045 steel counterpart was investigated with a pin-on-disc test rig, with an emphasis on exploring the effect of the counterpart surface roughness on the tribological behavior of the composites. The changes of the steel surface topography were examined with a profilometer, while the morphology of the polymer and composite transfer films formed on the steel counterpart surface was observed with an optical microscope. The results show that the carbon fiber acts to considerably decrease the wear rate of PA1010. This is attributed to the load-carrying function and lubricity of the carbon fiber. The friction and wear behavior of PA1010 and its reinforced composites is dependent on the counterpart surface roughness. A lowest wear rate of the composite is recorded at a counterpart surface roughness Ra 0.11～0.13 μm, while too high or too small counterpart surface roughness corresponds to higher wear rate of the composites. This is because the wear resistance of the composite is governed by the transfer film characteristics which are related to the counterpart surface roughness.