The microstructure of Al2O3/Mo composite was analyzed and the wear behavior was tested.The analysis results of wear data and wear morphology show that the amount of density first increases and then decreases gradually,but hardness increased with the increasing of the volumn fraction of Al2O3.There is some degree of reduction on the wear produced by the process of cutting,plowing.When the Al2O3 volume fraction is 3%,the specific wear rate of composites increases gradually with the particle size decreases.However,at higher Al2O3 volume fraction（5%,10%,15%）,the specific wear rate first increases and then decreases with the increasing of abrasive grain diameter.The wear loss increases with the increase of the load,while there is no influence on the order.On the same load,the wear loss shows a declining trend with the continuous increase of Al2O3 content,but the speed is slower.%对Al2O3/Mo复合材料的微观形貌进行了分析,同时测试了Al2O3/Mo复合材料的磨损行为。结果表明,随Al2O3体积分数的增加,基体的密度先增大后减小,显微硬度逐渐增加,磨损过程中产生的切削、犁沟在数量、深度上都有一定程度的减少。当Al2O3的体积分数为3%时,随着磨粒粒度的减小,复合材料的比磨损率逐渐增加,Al2O3的体积分数较高（5%、10%、15%）时,比磨损率随磨料粒径的增大而呈现先增加后减少的趋势。材料的磨损量随载荷增加而增加,材料的磨损量的排列顺序不受载荷变化的影响。在同一载荷下,材料的磨
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