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研究了SiC颗粒增强铜基复合材料的高温摩擦磨损行为.结果表明,复合材料的磨损量变化受环境温度的影响.当不超过300℃时,随着温度增加,复合材料的磨损率反而降低.高温磨损过程中,在两接触面间的区域通过机械混合→研磨→铜基体压入→热压的机制,而在复合材料磨损表面形成一个致密且连续分布的釉质层,对复合材料起到保护作用.当温度高于临界值时,由于亚表层Cu基体塑性变形量增加,导致釉质层脱落,而发生严重的粘着磨损,使得复合材料的磨损率显著增加.

参考文献

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