镁合金铈化学转化工艺及性能研究  

Research on Cerium Conversion Coating Process and Properties of Magnesium Alloy

作　　者：白丽群[1,2] 钱建刚[2] 舒康颖[1] 李荻[2] 

机构地区：[1]中国计量学院材料科学与工程学院,杭州310018 [2]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《材料导报》2009年第4期71-74,共4页Materials Reports

基　　金：国家自然科学基金资助项目(50702054);航空科学基金资助项目(03H51016);中国计量学院引进人才科研启动项目(01101-149)

摘　　要：镁合金稀土转化膜技术是一种环保型镁合金表面处理新技术。通过正交实验对压铸镁合金AZ91D铈化学转化处理工艺进行了研究,并对膜层性能进行了测试。结果表明,铈转化处理工艺能够在压铸镁合金AZ91D表面形成均匀、完整的转化膜;膜层主要由Ce2O3、CeO2和MgO以及少量的Al2O3组成;铈转化处理提高了镁合金的耐腐蚀性能。The rare earth conversion coating technology of magnesium alloys has been developing as an environmental-friendly surface treatment technology for magnesium alloys. The process of cerium conversion coating on magnesium alloy AZ91D is studied by using orthogonal layout. Characterizations of the cerium conversion coating are in- vestigated. The results show that the uniform coating by the process of cerium conversion on magnesium alloy is obtained. The cerium conversion coating is mainly composed of MgO, Ce2O3, CeO2 and a little amount of Al2O3. The corrosion resistance of magnesium alloy is improved by the cerium conversion treatment.

关 键 词：镁合金 铈 稀土转化 耐腐蚀性 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TS39[金属学及工艺—金属材料]