铝基复合材料摩擦磨损性能研究

为研究碳纤维对Al1O3f/ZL109复合材料摩擦磨损性能的影响,进一步提高金属基体的摩擦磨损性能,利用液态模锻法制备了(Cf,Al2O3f)/ZL109复合材料,并研究了该材料的摩擦磨损性能.结果表明:各种(Cf,Al2O3f)/ZL109复合材料的磨损量均随载荷的增加而增大,但复合材料的磨损量均低于ZL109基体,且在总纤维体积分数为12%的复合材料中,(4?,8%Al2O3f)/ZL109复合材料具有最低的磨损量;各种(Cf,Al2O3f)/ZL109复合材料的摩擦因数均随载荷的增加而减小.(Cf,Al2O3f)/ZL109复合材料的耐磨性由碳纤维与氧化铝纤维性能及基体共同决定.

Friction and Wear Behavior of Aluminum Alloy Based Composites Reinforced with Carbon and Alumina Fibers

Liquid state die-forging was used to prepare ZL109 aluminum alloy based composites reinforced with carbon and alumina fibers coded as(Cf,Al2O3f)/ZL109 composite,aiming at improving the wear resistance of Al alloy-matrix composites.The friction and wear behaviors of the resulting(Cf,Al2O3f)/ZL109 composites containing different contents of mixed carbon and alumina fibers were investigated,with the effect of carbon fiber on the wear resistance of the composites being focused on.Moreover,the morphologies of the worn surfaces of the Al alloy-based composites were observed using a scanning electron microscope,and the wear mechanisms primarily discussed.The results showed that the wear volume loss of the composites with different contents of mixed fibers increased with increasing load,and all the composites had better wear resistance than the ZL109 aluminum alloy matrix.The composite with a total fiber volume fraction of 12%,i.e.,(4%Cf,8%Al2O3f)/ZL109 composite,had the minimum wear volume loss.Besides,the friction coefficients of the(Cf,Al2O3f)/ZL109 composites decreased with increasing load,and the wear resistance of the composites was highly dependent on the properties and volum fraction of the carbon and alumina fibers.