【摘要】 采用粉末冶金法制备出Ａｌ２Ｏ３／青铜复合材料，研究了烧结温度、Ａｌ２Ｏ３颗粒尺寸、含量及表面状态对复合材料性能的影响。结果表明，采用二次压制与烧结工艺制备的复合材料的组织致密，Ａｌ２Ｏ３颗粒分布均匀，综合性能优于６－６－３青铜材料。Ａｌ２Ｏ３颗粒的化学包覆处理可以使复合材料的性能进一步提高。更多还原

【Abstract】 In this paper, Al₂O₃/ bronze composite has been prepared via powder metallurgy using conventional technology and equipment. The influence of various sizes and content of Al₂O₃ particles on properties of the composite has been investigated at different sintering temperatures. The technology of chemcial plating has been adopted to pretreat Al₂O₃ particles. The results show that composites fabricated by pressing and sintering two times have fine microstructure, uniformly distributing particles, and better properties than popularly used 6-6-3 bronze bearing material. Chemical plating on Al₂O₃ particles can further improve general properties of the composite.更多还原