通过MM-1000Ⅱ摩擦试验机,研究了三维针刺C/SiC复合材料与30CrSiMoVA对偶的摩擦磨损性能,并结合SEM,XRD,EDS、热力学计算以及刹车过程温度场有限元模拟,分析了刹车过程中的摩擦磨损机理和物相转变.结果表明:随着初始刹车速率的增加,三维针刺C/SiC复合材料与30CrSiMoVA对偶刹车的平均摩擦系数减小,摩擦面温度升高,三维针刺C/SiC复合材料与30CrSiMoVA线磨损率呈增大趋势.初始刹车速率大于15m/s刹车时,摩擦面最高温度高于560℃,Fe与SiC,Si以及O2发生反应生成Fe3C,Fe3 Si,FeO,γ-Fe2 O3和α-Fe2O3,以上反应与磨粒磨损、粘着磨损以及疲劳磨损相互促进,加速了材料的磨损.
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