纤维增强铸型尼龙在水润滑条件下的摩擦磨损性能研究

考察了玻璃纤维和碳纤维增强MC尼龙在水润滑条件下的摩擦磨损特性，并借助扫描电子显微镜和表面形貌仪分析了磨损机理。结果表明：在水润滑条件下，纤维增强MC尼龙的摩擦系数比干摩擦下的低，耐磨性优于未增强的基体材料；其中碳纤维增强MC尼龙比玻璃纤维增强MC尼龙具有更低的摩擦系数和更高的耐磨性能；碳纤维增强MC尼龙的磨损机理主要是粘着转移，同时伴有犁削作用，而玻璃纤维增强MC尼龙的磨损机理主要是犁削作用。

Investigation of the Friction and Wear Behavior of Fiber Reinforced MC Nylon Under Water Lubrication

The friction and wear behaviors of glass fiber and carbon fiber reinforced MC nylon composites (coded as GF/MCPA and CF/MCPA, respectively) under water lubrication were investigated with an MM 200 friction and wear tester. The worn surfaces and wear debris were observed and analyzed using a scanning electron microscope and a surface profilometer. The results show that fiber reinforced MC nylon composite sliding against AISI1045 steel under water lubrication registers lower friction coefficients than under dry sliding and the wear resistance of the reinforced composites is better than that of MC nylon matrix. Of the two composites, CF/MCPA has smaller friction coefficient and higher wear resistance than GF/MCPA. This is attributed to the formation of a uniform and continuous transfer film on the counterpart steel surface sliding against CF/MCPA. CF/MCPA is characterized by adhesion and transfer, accompanied by slight plowing in sliding against steel, while GF/MCPA is characterized by micro cutting.