Al_2O_3/ZL101复合材料的摩擦学行为

Tribological Behavior of Al2O3/ZL101 Composites

利用液态浸渗法制备了Ａｌ２Ｏ３颗粒／ＺＬ１０１复合材料，并对其显微组织、摩擦磨损性能、摩擦磨损机制进行了分析。结果表明，液态浸渗法是一种优异的颗粒增强金属基复合材料（ＭＭＣ）制备方法；Ａｌ２Ｏ３／ＺＬ１０１复合材料的耐磨性远高于ＺＬ１０１合金，适当的热处理可以改善复合材料及ＺＬ１０１合金的耐磨性；Ａｌ２Ｏ３颗粒／ＺＬ１０１复合材料的摩擦系数明显低于ＺＬ１０１合金，热处理对复合材料及ＺＬ１０１合金的摩擦系数均有影响；ＭＭＣ的摩擦机理以氧化－磨粒磨损为主，ＭＭＣ的摩擦力主要由基体与对磨环的粘着产生。

? Al2O3 particle reinforced ZL101 composites were fabricated by means of liquid infiltration method,the microstructure,tribological properties and tribological mechanism were also researched in this paperThe results showed that the liquid infiltration method was an excellent method to fabricate particle reinforced metal matrix compsites (MMCs),the wear resistance of Al2O3/ZL101 was much better than that of ZL101 alloy,and the wear resistance of both the MMCs and ZL101 alloy could be improved by appropriate heat treatment.The friction coefficients of Al2O3/ZL101 were obviously lower than those of ZL101 alloy,and heat treatment had influence on the friction coefficients of the MMCs and ZL101 alloy.The wear mechanism of the MMCs was mainly Oxidationabrasion wear,and the frictional force of the MMCs were caused by adhesion between counterfaces of MMCs and steel counterwear ring