Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 27    No. 7    July 2017

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Corrosion behavior and surface treatment of superlight Mg-Li alloys
Yue-hua SUN, Ri-chu WANG, Chao-qun PENG, Yan FENG, Ming YANG

School of Materials Science and Engineering, Central South University, Changsha 410083, China

Abstract:Mg-Li alloy, as a superlight metallic engineering material, shows great potential in the fields of aerospace and military due to its high specific strength, better formability, and excellent electromagnetic shielding performance. The research process of Mg-Li alloys is reviewed and three main problems are pointed out. Aimed at the poor corrosion resistance of Mg-Li alloys, the corrosion behavior is mainly summarized. The surface treatment technologies, including electroplating, electroless plating, plasma spraying, molten salt replacement, conversion coating, anodizing, micro-arc oxidation, organic coating, and organic-inorganic hybrid coating, are introduced in detail. Finally, the future development of corrosion and protection of Mg-Li alloys is discussed.

 

Key words: Mg-Li alloy; specific strength; formability; electromagnetic shielding; corrosion behavior; surface treatment; hybrid coating

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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