镁合金在海洋环境中的腐蚀与防护研究  

A Review on Corrosion and Protection of Mg-alloy in Marine Environment

作　　者：魏然 蒋全通 孙琛 王伟伟 段继周[1,2,3] 侯保荣 WEI Ran;JIANG Quantong;SUN Chen;WANG Weiwei;DUAN Jizhou;HOU Baorong(Key Laboratory of Advanced Marine Materials,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Sanya Institute of Ocean Eco-Environmental Engineering,Sanya 572000,China;University of Chinese Academy of Sciences,Beijing 100049,China;China Quality Certification Centre Qingdao Branch,Qingdao 266061,China)

机构地区：[1]中国科学院海洋研究所海洋关键材料全国重点实验室,青岛266071 [2]三亚海洋生态环境工程研究院,三亚572000 [3]中国科学院大学,北京100049 [4]中国质量认证中心青岛分中心,青岛266061

出　　处：《中国腐蚀与防护学报》2025年第3期533-547,共15页Journal of Chinese Society For Corrosion and Protection

基　　金：海南省三亚崖州湾科技城科技创新联合项目(2021CXLH0005);中国工程科技发展战略海南研究院咨询研究课题(22-HN-XZ-02)。

摘　　要：本文综述了镁合金在海洋大气环境、海水浸没环境和滨海滩涂环境下的腐蚀规律与腐蚀机理,分析了环境因素对镁合金腐蚀行为的影响;并根据镁合金在海洋环境下的使用情况,简要介绍了如何提高镁合金的耐蚀性能和使用寿命。本文旨在为镁合金在海洋环境下的应用和防护提供参考。Mg-alloy have the advantages of low density and high specific strength,which are as green metal structural materials in the 21st century and show great potential in the application in marine environment.However,the poor corrosion resistance and unique marine environment limit their application.In this work,the corrosion behavior and corrosion mechanism of Mg-alloy in marine atmospheric environment,seawater immersion environment and coastal beach environment are reviewed.The effect of humidity,temperature and pollutants on the corrosion behavior of Mg-alloy in atmospheric environment and the effect of Cl-on their corrosion behavior in seawater environment are analyzed.The corrosion mechanism of magnesium anode in seawater battery was introduced.The effect of microbial corrosion on metal corrosion behavior in beach environment is also briefly introduced.According to the application of Mg-alloy in marine environment,how to improve the corrosion resistance and service life of Mg-alloys is briefly introduced.Generally,there are two main methods to improve the corrosion resistance of Mg-alloys in marine atmospheric environment:one is to improve the corrosion resistance of Mg-alloy by alloying with other metal elements and changing the processing technology to alter the microstructure of Mgalloys;the other is to form a chemical protective film on the surface of the Mg-alloys.Besides,Mg-alloys are mainly used as anode materials for seawater batteries in seawater environment,correspondingly,their electrochemical properties can be improved by adding other metal elements to Mg-alloys.Mg-alloy can be used as sacrificial anode material for pipelines in tidal flat environment,for that circumstance,mainly by adding metal elements to improve its cathodic protection efficiency.However,there are few studies on improving the protection efficiency of Mg-sacrificial anode in tidal flat environment,which needs further research in the future.This paper aims to provide a reference for the application and protection of Mg-alloys in the m

关 键 词：镁合金 海洋环境 滨海滩涂 海水环境 腐蚀性能 防护技术 

分 类 号：TG174[金属学及工艺—金属表面处理]