微弧氧化处理对铝合金耐霉菌腐蚀特性的影响  

Effect of plasma electrolytic oxidation on mould corrosion resistance of aluminum alloy

作　　者：王晓波[1] 杨国华 全风美[1] 法涛[1] 朱生发[1] Wang Xiaobo;Yang Guohua;Quan Fengmei;Fa Tao;Zhu Shengfa(Institute of Materials,China Academy of Engineering Physics,Mianyang Sichuan 621900,China)

机构地区：[1]中国工程物理研究院材料研究所,四川绵阳621900

出　　处：《金属热处理》2020年第5期90-96,共7页Heat Treatment of Metals

摘　　要：在2A12铝合金表面制备了微弧氧化膜层,按照国家军用标准霉菌测试方法对微弧氧化膜层的耐腐蚀性能进行了测试,通过扫描电镜(SEM)、X射线衍射分析(XRD)对铝合金基体及微弧氧化膜层霉菌腐蚀前后的微观结构、相组成进行了表征。结果表明,未经过微弧氧化处理的铝合金表面有少量的霉菌生长,表面产生了一定数量的点蚀坑,长霉等级为1级。经过微弧氧化处理试样表面未发现霉菌生长,长霉等级为0级。微弧氧化处理可以有效提高铝合金表面耐霉菌腐蚀性能,扩大其应用范围。Plasma electrolytic oxidation( PEO) coatings were fabricated on the 2A12 aluminum alloy and mould corrosion resistance of the PEO coating was tested. SEM and XRD were employed to analyze the morphology,composition and phase component of the coatings. The results show that the mould growth behavior is observed on the surface of aluminum alloy under mould condition. Pitting corrosion occurs on the metal surface and the corrosion degree is grade I,while no mould growth behavior is observed on the PEO coating surface and the corrosion degree is grade 0. PEO treatment can improve the mould corrosion resistance of the aluminum alloy and expand their application.

关 键 词：铝合金 微弧氧化 霉菌 耐腐蚀 

分 类 号：TQ174.453[化学工程—陶瓷工业]