Active corrosion protection of various aluminium alloys by lithium-leaching coatings

被引：30
|
作者：
Visser, Peter [1 ,2 ]
Terryn, Herman [1 ,3 ]
Mol, Johannes M. C. [1 ]
机构：
[1] Delft Univ Technol, Dept Mat Sci & Engn, Mekelweg 2, NL-2628 CD Delft, Netherlands
[2] AkzoNobel, Rijksstraatweg 31, NL-2171 AJ Sassenheim, Netherlands
[3] Vrije Univ Brussel, Res Grp Electrochem & Surface Engn SURF, Brussels, Belgium
来源：
SURFACE AND INTERFACE ANALYSIS | 2019年 / 51卷 / 12期
关键词：
aluminium; active corrosion protection; alloy; inhibitor; lithium; INTERMETALLIC PHASES; ELECTROCHEMICAL IMPEDANCE; AA2024-T3; LAYERS; FILM; TEMPERATURE; INHIBITORS; CONVERSION; CARBONATE; BEHAVIOR;
D O I：
10.1002/sia.6638
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study presents the active protective properties of lithium-leaching coatings for a range of aluminium alloys. Coatings with and without lithium carbonate as leachable inhibitor were applied on the aluminium alloys, artificially damaged and exposed to the neutral salt spray. A combined approach of scanning electron microscopy and electrochemical measurements revealed that the lithium carbonate leaching coating provided effective corrosion inhibition on AA2024, AA7075, AA5083, and AA6014 by the formation of a protective layer in the defect area and preventing local corrosion processes despite the different intrinsic electrochemical activity of the alloys.
引用
收藏
页码：1276 / 1287
页数：12
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