铜-碳电接触摩擦材料的研究

Cu-C Electric Contact Friction Materials

采用粉末冶金复压复烧技术制备出高密度的铜 碳复合材料,对两种成分铜 碳复合材料的显微组织、物理力学性能和耐磨性能进行了对比试验。结果表明:复压复烧后材料的密度得到显著提高,达到理论密度的95%。沿压制方向和垂直压制方向的碳含量分布不同,Cu 5C复合材料的耐磨性能和电性能较佳。

The technology of repressing and re-sintering in powder metallurgy had been used to fabricate a(c)Cu-C) composite materials attaining above 95% of the theoretical density. The microstructure, physical and mechanical properties of the Cu-C composite materials were studied. The results indicate that the density of the Cu-C alloys can be improved by repressing and re-sintering technology. The carbon distribution in microstructure is different in different directions either along pressing direction or perpendiculari to pressing direction. When the content in the a(c)Cu-C) material is 5 weight percent, the material can obtain more excellent performance.