镁合金在海洋环境中的腐蚀与防护研究

魏然, 蒋全通, 孙琛, 王伟伟, 段继周, 侯保荣

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

WEI Ran, JIANG Quantong, SUN Chen, WANG Weiwei, DUAN Jizhou, HOU Baorong

表1 不同环境下使用镁合金种类及性能改善方法

Table 1 Types and performance improvement methods of magnesium alloys used in different environments

Using environment Types of magnesium alloys Application Performance improvement methods Marine atmospheric environment AZ series; VW series magnesium alloys It is used in aerospace fields, aircraft engine shell and other parts Adding other metal elements or changing the processing technology to adjust the second phase; protective coatings were prepared on the surface of the alloy Seawater immersion environment AZ series; AE series such as Mg-Al-Zn-In magnesium alloys It is mainly used as anode material for seawater battery Addition of other metal elements to the alloy or heat treatment and plastic processing were used to improve the anode efficiency Coastal beach environment Pure magnesium; Mg-Mn series; Mg-Al-Zn-Mn series magnesium alloys Sacrificial anode material used for cathodic protection of buried pipelines The addition of other metal elements changes the grain size and the composition of the second phase to improve the current efficiency and corrosion uniformity