【摘要】 用磨损对比试验对无润滑条件下SiCP/ZrO2-MoSi2纳米复合陶瓷的磨损特性进行了分析。结果表明,加入SiC/ZrO2纳米颗粒能明显改善MoSi2陶瓷的室温耐磨性,复合陶瓷磨损特性与SiC/ZrO2纳米颗粒在基体中的体积分数有关;加入ZrO2使复合陶瓷的磨损特征倾向于粘着磨损,加入SiCP则使复合陶瓷的磨损特征倾向于磨粒磨损。ZrO2含量较高的纳米复合陶瓷在磨损中期呈现更好的耐磨性,而SiCP对耐磨性的提高则体现在磨损的后期,纳米复合陶瓷的整体耐磨性由硬度和韧性共同决定。更多还原

【Abstract】 The wear characteristics of SiC_P/ZrO₂MoSi₂ nanocomposite ceramic were analyzed through wear comparison tests under lubrication free conditions.The results show that the addition of SiC/ZrO₂ nanoparticles can improve the wearability of MoSi₂ ceramic at room temperature,and SiC particles can make the wear characteristics of composite ceramic to abrasive wear,while ZrO₂ particles turn to adhesion wear,the whole wear characteristics of composite ceramic is depend on the relative content of SiC/ZrO₂ nanoparticles.Nanocomposite ceramic with higher ZrO₂ content presents better wearability in middle wear period,while SiC_P enhancing wearability happens in last wear period.The overall wearability of SiC_P/ZrO₂-MoSi₂ nanocomposite ceramic depends both on its hardness and toughness.更多还原