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采用无压熔渗工艺制备一种新型的具有优异耐磨性能的碳纤维整体织物/炭/铜(C/C/Cu)复合材料,在UMT-3多功能摩擦磨损测试仪上考察复合材料的摩擦磨损行为,并与粉末冶金方法制备的滑板用炭/铜(C/Cu)复合材料进行了对比分析。结果表明:C/C/Cu复合材料形成了连通状的网络结构,其导电性能及力学性能明显优于传统C/Cu复合材料;2种复合材料摩擦系数相近;2种复合材料及其对偶的磨损率随载荷增大而增大;与C/Cu相比,C/C/Cu的耐磨性较优,且对对偶损伤较小,在70 N载荷下更为明显。连通状的网络结构及磨损表面形成的磨屑保护层是C/C/Cu复合材料具有良好摩擦磨损特性的主要原因。
A new type of carbon fiber monolith / carbon / copper (Cu) / Cu / Cu composites with excellent wear resistance was prepared by pressureless infiltration process. The friction of the composites was investigated on the UMT-3 multifunctional friction and wear tester Wear behavior, and compared with the C / Cu composite material prepared by powder metallurgy method. The results show that the C / C / Cu composites form a connected network structure, and their electrical and mechanical properties are obviously better than those of the traditional C / Cu composites. The friction coefficients of the two composites are similar, the two composites and their dual The wear rate increases with the increase of load. Compared with C / Cu, C / C / Cu has better wear resistance and less damage to the dual, which is more obvious under the load of 70 N. The connectivity of the network structure and wear surface wear debris protection layer is C / C / Cu composite material has a good friction and wear characteristics of the main reasons.