封孔处理对AZ31镁合金钙系磷化膜腐蚀性能的影响  

Effect of Sealing Treatment on Corrosion Resistance of Calcium Phosphating Conversion Film of AZ31 Alloy

作　　者：丁飞[1,2] 敬和民[1,2] 朱广江 

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]安徽省金属材料与加工重点实验室.安徽马鞍山243002

出　　处：《热加工工艺》2013年第22期119-121,共3页Hot Working Technology

摘　　要：采用XRD分析了磷化膜封孔后的物相组成,利用浸泡实验和电化学极化曲线等分析了膜层的耐腐蚀性能。结果表明,封孔时,基体参与反应形成了MgSiO3,封孔处理明显改善了钙系膜层的质量,膜层的耐腐蚀性能得到进一步增强。The phase composition of phosphate conversion coating film after sealing treatment was studied with XRD. Corrosion resisitance of the films was studied by immersion and electrochemical polarization curve test. The results show that the substrate reacts with the sealing reagent and the corrosion resistance of phosphating conversion coating of magnesium alloys is improved through sealing treatment.

关 键 词：钙系磷酸盐膜 封孔处理 耐腐蚀性 

分 类 号：TG174[金属学及工艺—金属表面处理]