镁合金环保型阳极氧化膜的耐蚀性能研究  

Research on corrosion resistance of environment-friendly anodic film of magnesium alloys

作　　者：马晓春[1] 倪玉萍[1] 李涛[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2011年第2期206-208,共3页Journal of Zhejiang University of Technology

摘　　要：阳极氧化能够有效地提高镁合金表面的耐腐蚀性能.以镁合金AZ91D为研究对象,阳极氧化过程采用绿色环保型电解液,该电解液不含铬、氟等有毒物质,但能显著改善镁合金AZ91D的表面耐腐蚀性能.对试样采用扫描电镜、浸泡实验和电化学测试等手段进行表征和分析.分析结果表明:生成的阳极氧化膜为致密、多孔结构,且浸泡试验和极化曲线的结果都证明此方法下制得的阳极氧化膜能够显著的提高镁合金的表面耐腐蚀性能.Anodizing is an effective method to improve the corrosion resistance of magnesium alloys.In this paper,a novel anodizing process based on an environmental friendly electrolytic bath which is free of chromate,fluoride or any other poisonous ingredient was developed for the anodizing of AZ91D magnesium alloy.The results of SEM,immersion test and electrochemical test reveal the film is dense,porous and therefore can improve the corrosion resistance of the alloy surface significantly.

关 键 词：镁合金 阳极氧化 耐腐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]