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为了充分利用高强高导电铜合金的导电性和强度,以及银石墨材料的润滑性,改善CuCrY、CuCrZrY材料的耐磨性能,采用电镀的方法成功地对CuCrY、CuCrZrY材料表面进行了镀覆。研究了镀层的组成及电镀工艺条件,得到较好的镀液组分及电镀方案;通过优化工艺参数得到平均厚度为100～200μm的镀银石墨层。同时,采用扫描电镜及能谱等对镀银石墨层的厚度、表面形貌,镀银石墨层与基体的界面进行了分析。结果表明,CuCrY/AgC、CuCrZrY/AgC复合材料表面镀层均匀、致密,AgC复合层厚度一致,稳定。界面成锯齿状,机械结合的特征十分明显,有利于改善基体和银石墨界面的结合。
In order to make full use of the conductivity and strength of high strength and high conductivity copper alloy, the lubricity of silver graphite material and the wear resistance of CuCrY and CuCrZrY materials, the surface of CuCrY and CuCrZrY materials were successfully plated by electroplating. The composition of the coating and the conditions of the electroplating process were studied, and the better plating solution and electroplating solution were obtained. The silver-coated graphite layer with the average thickness of 100 ~ 200μm was obtained by optimizing the process parameters. At the same time, the thickness of the silver-coated graphite layer, the surface morphology and the interface between the silver-coated graphite layer and the substrate were analyzed by scanning electron microscopy and energy spectrum. The results show that the surface coatings of CuCrY / AgC and CuCrZrY / AgC composites are uniform and compact, and the thickness of AgC composite layer is uniform and stable. Interface jagged, the mechanical characteristics of the combination is very obvious, help to improve the interface between the matrix and silver graphite.