摘要
采用电弧喷涂工艺在6061铝合金基体表面喷涂高纯铝涂层,利用金相显微镜对涂层的组织进行观察,分析了基体与涂层的结合方式,测量了涂层的孔隙率。并采用质量分数为5%的NaCl溶液浸泡试验、盐雾试验和电化学试验,检验了涂层的耐腐蚀性。结果表明,利用电弧喷涂技术可以在6061铝合金基体表面形成均匀、致密、孔隙率低、结合良好的高纯铝涂层;高纯铝涂层耐腐蚀性较好,对铝合金基体起到了保护作用,涂层经过封孔工艺处理后保护作用更好。
The pure aluminum coatings on 6061 Al alloy were prepared by arc spraying.The microstructure and porosity of the coating were observed by means of optical microscope.The evaluation of the corrosion properties of the coatings was carried out through the simulated immersing tests,salt spray test and electrochemical experiment in 5% NaCl solution.The results showed that the pure aluminum coating was homogeneous and dense,as well as lower porosity.The coatings can protect the Al alloy substrate from corrosion.T...
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2008年第6期109-112,118,共5页
Transactions of The China Welding Institution
关键词
铝合金
铝涂层
电弧喷涂
耐腐蚀
Al alloy
aluminum coating
arc spraying
corrosion resistance
