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作者采用冷压-烧结工艺研制了Al_2O_3+PTFE、PTFE+PPS和Al_2O_3+(PTFE+PPS)3类复合材料,并对这些材料的摩擦磨损行为及其磨损机理进行了研究。结果表明,适量Al_2O_3粒子的弥散可以明显提高复合材料的耐磨性,PTFE+PPS复合材料的耐磨性远比PTFE的好,摩擦系数几乎与PTFE的相同,是一种良好的减摩抗磨材料。复合材料的磨损过程主要受粘着、犁削和塑性流动机制的控制。
The authors developed a series of composites of Al_2O_3 + PTFE, PTFE + PPS and Al_2O_3 + (PTFE + PPS) using cold-press-sintering technology. The friction and wear behavior and wear mechanism of these composites were studied. The results show that the dispersion of appropriate amount of Al 2 O 3 particles can obviously improve the wear resistance of the composites. The wear resistance of PTFE + PPS composites is much better than that of PTFE, and the friction coefficient is almost the same as that of PTFE, which is a good friction and wear resistance material. The wear process of composites is mainly controlled by adhesion, plowing and plastic flow mechanism.