J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (02): 225-229.

• Articles • Previous Articles     Next Articles

Influence of Al Content on the Atmospheric Corrosion Behaviour of Magnesium-Aluminum Alloys

Ruiling Jia1,3)†, Chuanwei Yan2) and Fuhui Wang1,2)   

  1. 1) College of Materials Science & Chemistry Engineering, Key Laboratory of Superlight Materials and Surface Technology Ministry of Education, Harbin Engineering University, Harbin 150001, China
    2) State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    3) College of Materials Science & Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
  • Received:2007-09-28 Revised:2007-12-26 Online:2009-03-28 Published:2009-10-10
  • Contact: Ruiling Jia
  • Supported by:

     the National Natural Science Foundation of China (Grant No. 50571105)

Abstract:

The influence of Al content on the Mg-Al alloys corrosion performance during sodium chloride induced atmospheric corrosion has been studied. It was found that the corrosion rate of three Mg-Al alloys was accelerated with increasing Al content. The poor corrosion resistance was attributed to the galvanic coupling between the α  phase and eutectic phase or ® phase and the formation of porous corrosion products.

Key words: Magnesium alloys, Al content, Atmospheric corrosion