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Present Situation and Development Trend of Mg Alloy Surface Treatment

LIANG Chun-lin,LIU Yi-han,HAN Bian-hua,LI Hong-bing,JI Hai-bin,YAO Guang-chun (Material and Metallurgy College,Northeast University,Shenyang 110004,China)  
As 3C industry has being developed rapidly recently,energy-saving and environment protection have been the worldwide focal point.Reducing weight and cyclical utilization of martial are the best methods.Magnesium alloy is one of the lightest engineering materials.It has been named the 21 century green structural metallic materials and has extensive application prospect for its characteristics such as specific strength,specific rigidity,recirculation,better casting property and so on.But the industry application of magnesium alloy is severely limited for its low corrosion resistance.So the preventive disposing on the surface of magnesium alloy is very important.Now,there are many kinds of surface treatment technologies of Mg alloy.In order to explore the optimal technology of surface treatment,many methods of surface treatment for magnesium alloy are reviewed and respective characteristic at home and board are discussed.Especially surface modification and surface coating are emphasized to be analysed.In the end the development trend of magnesium alloy in future is also given basing on the former methods.
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