镁锂合金表面植酸转化膜制备及其腐蚀行为研究  

Investigation of Preparation of Phytic Acid Conversion Coatings on Mg-Li Alloy and Their Corrosion Behaviors

作　　者：邓磊 赵志伟 张曼 万震 王保杰 DENG Lei;ZHAO Zhi-wei;ZHANG Man;WAN Zhen;WANG Bao-jie(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang Liaoning 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《辽宁化工》2020年第9期1049-1051,1062,共4页Liaoning Chemical Industry

基　　金：国家自然科学基金青年基金(项目编号:51701129);辽宁省博士启动基金(项目编号:2019-BS-200);大学生创新创业计划(项目编号:201910144006)。

摘　　要：在不同植酸质量浓度的两种转化液中分别制备了双相Mg-8%(wt)Li铸态合金表面植酸转化膜,研究并对比了转化膜对合金腐蚀行为的影响。结合电化学实验、析氢实验和腐蚀形貌,确定出合金在植酸质量浓度为30g·L-1的转化条件下所形成转化膜的腐蚀防护能力较优。能谱分析结果表明,不同转化条件下形成的转化膜均由Mg、C、N、O和P组成。The phytic acid conversion films on the surface of an as-cast Mg-8%(wt) Li alloy were prepared in two kinds of conversion solutions with different phytic acid concentration, and their corrosion behaviors were investigated through the electrochemical experiment, hydrogen evolution experiment and corrosion morphology. The results showed that the corrosion protection ability of the conversion films formed on the alloy surfaces under the conversion soluion of the phytic acid concentation of 30 g·L-1 was much better. The results of energy spectrum analysis showed that the conversion films formed under different conditions were composed of Mg, C, N, O and P.

关 键 词：植酸转化膜 镁锂合金 腐蚀 

分 类 号：TQ050.96[化学工程]