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。
The wear characteristics of SiCp/ZrO2-MoSi2 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 SiCp enhancing wearability happens in last wear period. The overall wearability of SiCp/ZrOE-MoSi2 nanocomposite ceramic depends both on its hardness and toughness.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2007年第1期56-58,共3页
Heat Treatment of Metals
基金
航空基础科学基金项目(04G56008)
