AZ31镁合金钼酸盐转化膜制备及性能研究  

Preparation and Properties of Molybdate Conversion Coating on AZ31 Magnesium Alloy

作　　者：周游[1] 姚颖悟[1] 吴锋 刘伟星 赵春梅[4] 

机构地区：[1]河北工业大学化工学院电化学表面技术研究室,天津300130 [2]铜陵丰山三佳微电子有限公司,安徽铜陵244000 [3]机械工业第三设计研究院,重庆400039 [4]河北工业大学建筑与艺术设计学院,天津300401

出　　处：《电镀与精饰》2013年第7期38-40,共3页Plating & Finishing

基　　金：河北省自然科学基金(B2012202002);河北省高等学校科学技术研究优秀青年基金(Y2011104);河北省社会科学基金(HB12SH037)

摘　　要：介绍了一种应用于AZ31镁合金的钼酸盐转化工艺。采用电化学方法评价了转化膜在5%NaCl溶液中的腐蚀行为,利用扫描电镜和X-射线衍射分析了转化膜的形貌和成分。结果表明,钼酸盐转化膜的主要成分是MoO2、MoO3和MoO(OH)2,转化膜呈球型网状结构,覆盖基体良好。耐蚀性能评价证明对基体合金有一定的防护作用。A molybdate conversion treatment process applied to AZ31 magnesium alloy was introduced. Corrosion behavior of the conversion coating in 5 % NaCl solution were evaluated by electrochemical methods, morphology and composition of the coating were studied by scanning electron microscopy and X-ray diffraction. Results showed that the molybdate conversion coating had a spherical mesh crack structure with MoO2, MoO3 and MoO （OH）2 as main component and had good coverage to basal body. Corrosion resistance evaluation proved that the coating could play a protective role for the basal body.

关 键 词：镁合金 钼酸盐转化膜 耐蚀性 

分 类 号：TG174.451[金属学及工艺—金属表面处理]