摘要
通过金相、扫描电镜分析和物理性能测试等手段，对化学镀铜的石墨粉与铜粉混合制备成的复合材料的组织、性能、工艺进行了研究。结果表明，在平均粒度４—６μｍ石墨表面能均匀地涂覆金属铜，并且在压制压力、烧结温度合适的条件下，复合材料的组织均匀，致密性好，石墨在基体中弥散分布，金属铜形成细小的三维网状搭接。这种组织形态使材料的导电性及强度明显提高，特别是电阻率较国内成分相近的市售商品牌号降低４５％。
Abstract In this paper, by means of the analysis of SEM and metallograph and the test of physical properties, the microstructures and properties of the composites made from copper coated graphite by chemical plating have been studied. The results show that when the molding pressure and sintered temperature are optimal, the composite material has a homogeneous structure, a high density, wide scatted graphites and fine three dimensional metal lattice. This structure strikingly elevates the electrical and thermal conductivity and antiwear properties. Specially, the resistivity is lower by 45% than that of the commercial product (Cu graphite) in our country.
出处
《机械工程材料》
CAS
CSCD
北大核心
1999年第2期41-43,共3页
Materials For Mechanical Engineering
基金
国家自然科学基金
安徽省教委资助
