提出了一种制备颗粒改性铜基复合材料的新方法——区熔法 ,采用该法成功地制取了石墨 /铜基复合材料 .通过金相、扫描电镜分析和物理性能测试等手段对区熔法制成的复合材料的组织、性能进行了研究 .结果表明 ,在石墨平均粒度小于 1 μm时 ,并且在压制密度、加热和冷却速度合适的条件下 ,复合材料的组织均匀 ,致密性好 ,石墨在基体中弥散分布 ,材料的导电性明显提高 ,特别是电阻率较国内成分相同的市售商品牌号降低 4 1 % . A new method of preparing grain-modified copper matrix composites - zone melting method was proposed, and the graphite / copper matrix composites were successfully prepared by this method. Through the metallographic, SEM and physical property tests The results show that the microstructure of the composites is homogeneous and compact with the average particle size of graphite less than 1 μm, and the suitable pressing density, heating rate and cooling rate , Graphite dispersed in the matrix, the conductivity of the material significantly improved, especially the same as the domestic component of the commercial brand lower by 41%.