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Anticorrosion Performance of LDH Coating Prepared by CO2 Pressurization Method.
- Source :
- International Journal of Corrosion; 9/27/2018, p1-10, 10p
- Publication Year :
- 2018
-
Abstract
- Many surface treatment methods are used to improve the corrosion resistance of magnesium alloys. LDH (layered double hydroxides) conversion coatings are currently found in the most environmentally friendly and pollution-free coatings of magnesium alloy. In this study, the CO<subscript>2</subscript> pressurization method was applied to the preparation of LDH coating on magnesium alloy for the first time. The effect of CO<subscript>2</subscript> pressurization on the formation and corrosion resistance of LDH coating on AZ91D alloy was investigated. The hardness and adhesion were significantly higher on LDH coating in the case of CO<subscript>2</subscript> pressurization than it is in atmospheric pressure. The surface and cross-sectional morphologies show that LDH coating is more compact in the case of CO<subscript>2</subscript> pressurization than with atmospheric pressure. The results of the polarization curve, hydrogen evolution, and immersion tests indicate that the corrosion resistance of the LDH coating prepared by the CO<subscript>2</subscript> pressurization method was significantly improved. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16879325
- Database :
- Complementary Index
- Journal :
- International Journal of Corrosion
- Publication Type :
- Academic Journal
- Accession number :
- 132009646
- Full Text :
- https://doi.org/10.1155/2018/9696549