肖鹏,姜许,朱佳敏,刘滩,方华婵.树脂碳包覆石墨/铜复合材料组织和性能研究[J].稀有金属材料与工程,2019,48(10):3265~3274.[xiao peng,Jiang Xu,zhu jiamin,Liu tan,fang hua chan.Microstructures and properties of resin carbon-coated graphite/copper composites[J].Rare Metal Materials and Engineering,2019,48(10):3265~3274.]
树脂碳包覆石墨/铜复合材料组织和性能研究
投稿时间:2018-04-26  修订日期:2018-05-18
中文关键词:  树脂碳包覆石墨/铜复合材料  镀铜  导电性  力学性能  摩擦性能
基金项目:动车组前瞻技术研究资助项目(2016J011-G);动车组关键技术提升研究资助项目(2017J008-M);国家重点研发计划资助项目(2016YFB0301403);国家自然科学青年基金资助项目(51501228)
中文摘要:
      为低成本制备高性能石墨/铜复合材料,以酚醛树脂包覆石墨粉、电解铜粉、二氧化硅为原料,采用传统的粉末冶金工艺制备了树脂碳包覆石墨/铜复合材料,对比了其与天然鳞片石墨/铜复合材料和镀铜石墨/铜复合材料组织和性能的差异。发现酚醛树脂包覆可有效保护石墨结构完整性,还原铜表面氧化膜,促进铜的扩散烧结,利于致密化。与天然鳞片石墨/铜复合材料相比,树脂碳包覆石墨/铜复合材料的导电性能、力学性能和摩擦磨损性能提高,其电导率、抗弯强度和硬度分别为9.87 MS.m-1、81 MPa、22 HV,与镀铜石墨/铜复合材料的相当,且摩擦磨损性能略优于镀铜石墨/铜复合材料。
Microstructures and properties of resin carbon-coated graphite/copper composites
英文关键词:resin carbon-coated graphite/copper composite  copper-coated  electrical property  mechanical property  tribological property
英文摘要:
      According to the purposes of high properties of graphite/copper composites, resin carbon-coated graphite/copper composites were fabricated by using phenolic resin-coated graphite, electrolytic copper, silica as raw materials via traditional powder metallurgy method. The difference of the microstructures and properties compared with natural graphite/copper composites and copper-coated graphite/copper composites was researched. The results indicated that the structure of graphite can be protected through phenolic resin. Phenolic resin can break up the oxide layer on the Cu powder surfaces. The reduced Cu can accelerate the elements’ diffusion and sintering between the Cu particles and increase the sintering densification of the Cu matrix. Compare to the natural graphite/copper composites, the physical, mechanical and tribological properties of resin carbon-coated graphite/copper composites improved. The electrical conductivity, flexural strength, hardness are 9.87 MS·m-1, 81 MPa, 22 HV, respectively. These property values are equivalent to copper-coated graphite/copper composites, and tribological properties is a litter better than copper-coated graphite/copper composites.
作者单位E-mail
肖鹏 中南大学 粉末冶金国家重点实验室 xiaopeng@csu.edu.cn 
姜许 中南大学 粉末冶金国家重点实验室  
朱佳敏 中南大学 粉末冶金国家重点实验室  
刘滩 中南大学 粉末冶金国家重点实验室  
方华婵 中南大学 粉末冶金国家重点实验室 fanghc@csu.edu.cn 
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