Ce对铝青铜合金粉体材料涂层微观组织结构的影响

摘要

利用等离子喷焊技术,将自主研究开发的多元铜合金粉体(含Ce和不含Ce)涂覆在45等对熔覆层表面微观组织观察,采用X射线衍射、表面EDS、EPMA等分析手段,研究Ce在多元铝青铜粉末熔覆层中的分布及其对微观组织结构的影响.结果表明:稀土Ce在多元铝青铜合金粉体材料涂层中以化合物的形式存在,主要富集在晶界,少量分布在晶粒内.%Surface of 45# steel was coated with independently developed multiple aluminum bronze alloy powder (with Ce or without Ce) by means of plasma spray welding technology. Distribution of Ce and its effect on microstructure of multiple aluminum bronze coating were studied through coating surface microstructure observation, X-ray analysis, energy dispersive spectromty (EDS), electron probe micro-analysis (EPMA). The result showed that the rare-earth Ce existed in the multiple aluminum bronze coating in the form of compound, being basically on the grain boundary and a few inside the grain.