制备了两种具有不同基体炭类型的C/C复合材料,测试其与GCr钢在40 N时配副时的往复式摩擦行为.结果表明:随滑动频率的增加,两种试样的摩擦因数先增加,均在400 r/min时达到最大,之后除在1 200 r/min时略有反弹外,基本表现出线性下降趋势.在相同频率下,具有光滑层结构热解炭基体材料(SL)的摩擦因数低于另一种具有粗糙层结构热解炭和树脂炭混合基体(RL/RC)材料的.其中,RL/RC基体材料的摩擦因数在0.183～0.063之间;而SL基体材料的摩擦因数在0.150～0.059之间.随时间的延长,所有试样的摩擦因数均逐渐趋于稳定.Raman检测结果表明,随滑动频率增大,材料摩擦表面的微区石墨化度增加.但SEM形貌表明,随滑动频率增大,材料摩擦表面形貌由光滑变得粗糙,磨粒磨损加剧.
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