耐腐蚀Mg-Li合金的腐蚀与防护及其性能研究进展  

Research Progress on Corrosion and Protection of Corrosion-resistant Mg-Li Alloys

作　　者：田光元 严程铭 杨智皓 王俊升 TIAN Guangyuan;YAN Chengming;YANG Zhihao;WANG Junsheng(School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China;Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]北京理工大学前沿交叉学院,北京100081

出　　处：《中国腐蚀与防护学报》2023年第6期1255-1263,共9页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(52073030);国家自然科学基金广西区域创新联合基金(U20A20276)。

摘　　要：高比强度和高比刚度Mg-Li合金,由于其出色的减重效果,是理想的航空航天金属结构工程材料。然而,由于其耐腐蚀性能较差,严重制约了其在一些服役环境中的广泛应用。因此,耐腐蚀Mg-Li合金的成分、工艺研制是未来发展的重要方向。本文综述了其腐蚀机理及不同类型表面防护方法(金属涂层、阳极氧化、导电性-屏蔽性聚合物涂层和智能涂层)、研究现状与未来应用。同时,分析了不同类型腐蚀防护方法的优势与局限性问题,讨论了耐腐蚀Mg-Li合金腐蚀与防护的未来研究趋势,以期为耐腐蚀Mg-Li合金开发提供新思路。Mg-Li alloys with high specific strength and stiffness are ideal metal structural engineering materials for aerospace due to their excellent weight reduction effect.However,their poor corrosion resis-tance severely limits the wide application in some service environments.Therefore,in order to meet the demand of application,it is still necessary to adjust and optimize the composition of corrosion resistant Mg-Li alloys and improve its preparation process in the future.The research status on corrosion mecha-nism and different types of surface protection methods(metallic coating,anodic oxidation,conductive-shielded polymer coating,and smart coating),as well as future applications of corrosion-resistant Mg-Li alloys were summarized in this paper.Meanwhile,the advantages and limitation of different types of cor-rosion protection methods were analyzed,and the future research directions of corrosion and protection for corrosion resistant Mg-Li alloys are discussed so that to provide new ideas for future development of higher corrosion-resistant Mg-Li alloys.

关 键 词：MG-LI合金 腐蚀 防护 智能涂层 超疏水 

分 类 号：TG146.22[一般工业技术—材料科学与工程]