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International Journal of Corrosion Volume 2018 ,2018-09-27
Anticorrosion Performance of LDH Coating Prepared by CO2 Pressurization Method
Research Article
Xiaochen Zhang 1 , 2 Peng Jiang 3 Chunyan Zhang 4 Bateer Buhe 2 Bin Liu 1 Yang Zhao 1 Tao Zhang 4 , 5 Guozhe Meng 1 Fuhui Wang 5
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DOI:10.1155/2018/9696549
Received 2018-05-22, accepted for publication 2018-09-10, Published 2018-09-10
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摘要

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 CO2 pressurization method was applied to the preparation of LDH coating on magnesium alloy for the first time. The effect of CO2 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 CO2 pressurization than it is in atmospheric pressure. The surface and cross-sectional morphologies show that LDH coating is more compact in the case of CO2 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 CO2 pressurization method was significantly improved.

授权许可

Copyright © 2018 Xiaochen Zhang et al. 2018
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

通讯作者

Tao Zhang.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China, cas.cn;School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China, neu.edu.cn.zhangtao@mail.neu.edu.cn

推荐引用方式

Xiaochen Zhang,Peng Jiang,Chunyan Zhang,Bateer Buhe,Bin Liu,Yang Zhao,Tao Zhang,Guozhe Meng,Fuhui Wang. Anticorrosion Performance of LDH Coating Prepared by CO2 Pressurization Method. International Journal of Corrosion ,Vol.2018(2018)

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