Electrodeposited Zn-Al layered double hydroxide films for corrosion protection of aluminum alloys

被引：45
作者：
He, Qing-Qing [1 ]
Zhou, Ming-Jie [1 ]
Hu, Ji-Ming [1 ,2 ]
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[2] Southern Marin Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519080, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2020年 / 355卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
LDH films; Electrodeposition; Aluminum alloy; Corrosion protection; HYDROTALCITE CONVERSION COATINGS; NONENZYMATIC GLUCOSE SENSOR; MG ALLOY; ELECTROCHEMICAL DEPOSITION; SURFACE MODIFICATION; CRYSTAL-STRUCTURE; THIN-FILMS; LDH; EPOXY; AA2024;
D O I：
10.1016/j.electacta.2020.136796
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
This work provides a simple strategy to enhance the corrosion resistance of layered double hydroxide (Zn-Al LDH) films on AA2024 aluminum alloys by an electrodeposition method. Inhibitor anion vanadates are further intercalated into the interlayer galleries of LDHs through an ion-exchange process to improve their corrosion performance. Vanadates enhance the barrier property of the LDH films and are enriched in the corrosion sites to actively protect aluminum alloys. A literature survey shows that the electrodeposited LDH films exhibit comparable corrosion protection capacity to those prepared by the traditional hydrothermal method, although the former have the smallest thickness. (c) 2020 Elsevier Ltd. All rights reserved.
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页数：11
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