对预置 Al N微粒铜基复合材料内氧化前后进行了组织形貌观察和性能测试 ,结果表明 :在高纯氮气体介质中可实现预置微粒 Cu基复合材料的内氧化 ,内氧化物在弥散分布的原预置微粒处形核、长大 ,充满于整个复合材料之中 ;复合材料抗压强度的提高来自于晶粒细化和第二相弥散强化的共同作用 ;内氧化使复合材料致密化程度提高 ,并增加了粒子与基体之间界面的结合强度 ,是改善耐磨性的主要原因。 The microstructure and surface properties of Cu-based composites pretreated with AlN particles before and after oxidation were investigated. The results show that the internal oxidation of Cu-based composites pre-particles in high purity nitrogen gas can be achieved. Pre-dispersed particles dispersed at the nucleation, growth, full of the entire composite material; compressive strength of the composite material from the grain refinement and the second phase dispersion strengthening of the joint effect; internal oxidation of the composite material The degree of densification is increased, and the bonding strength between the particles and the matrix is ​​increased, which is the main reason for improving the wear resistance.