An ionic liquid surface treatment for corrosion protection of magnesium alloy AZ31

被引:75
作者
Forsyth, Maria [1 ]
Howlett, Patrick C.
Tan, Seal K.
MacFarlane, Douglas R.
Birbilis, Nick
机构
[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
[2] Monash Univ, Dept Chem, Clayton, Vic 3800, Australia
[3] Ohio State Univ, Fontana Corros Ctr, Columbus, OH 43210 USA
关键词
D O I
10.1149/1.2344826
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
We describe here the development of protective surface films on a Mg alloy in ionic liquids (ILs) based on the bis(trifluoromethanesulfonyl)amide (TFSA) anion. The film is shown to provide improved corrosion resistance to the alloy against humid environments as well as in the presence of chloride. Film formation is the result of the extreme reactivity of the metal in the IL, which provides a unique, concentrated medium of the desired reactive species, in this case the TFSA anion. The duration of the treatment is shown to influence the thickness and morphology of the resulting film and hence its protectiveness. (c) 2006 The Electrochemical Society.
引用
收藏
页码:B52 / B55
页数:4
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