Enhancement of corrosion resistance of AZ31 Mg alloys by one-step in situ synthesis of ZnAl-LDH films intercalated with organic anions (ASP, La)

doi:10.1016/j.jma.2020.03.013

	Enhancement of corrosion resistance of AZ31 Mg alloys by one-step in situ synthesis of ZnAl-LDH films intercalated with organic anions (ASP, La)
	Song, Yuhan 1,2; Tang, Yan 1; Fang, Liang 1; Wu, Fang 1; Zeng, XianGuang 3; Hu, Jia 4; Zhang, Shu Fang 5; Jiang, Bin 4; Luo, HaiJun 6
	2021-03-15
发表期刊	Journal of Magnesium and Alloys
ISSN	2213-9567
卷号	9 期号:2 页码:658-667
摘要	Inserting corrosion inhibitors into a lamellar protective coating is an effective way to improve the corrosion resistance of metal substrates. In this work, two kinds of environmentally friendly organic acid anions, aspartic acid (ASP) and lauric acid (La), were explored as corrosion inhibitors to in situ intercalate into the ZnAl-layered double hydroxides (ZnAl-LDHs) on AZ31 magnesium alloys by a facile one-step hydrothermal method. The morphology, composition, structure and the corrosion resistance of these two LDHs coating before and after corrosion experiment were investigated. It is found that both the two kinds of ZnAl-LDHs films consist of uniform and dense layered nanosheets (NSs), and the NSs of ZnAl-ASP-LDHs films grow vertically, but those of ZnAl-La-LDHs films exhibit a staggered tilted structure. The corrosion current density of the two ZnAl-LDHs films are two orders of magnitude lower than that of Mg alloy substrate. After one week's immersion in NaCl solution, the NSs structure of two kind of ZnAl-LDHs films still remains the uniform and densely coverage on Mg alloy. Owing to the larger d(003) spacing, the ZnAl-La-LDHs have better ability to absorb Cl− and release interlayer anions than ZnAl-ASP-LDHs. These results indicate that the ZnAl-LDHs films intercalated with organic anions, specially La anions, can significantly improve the corrosion resistance of Mg alloy. © 2020
关键词	ZnAl-LDHs Magnesium alloy Organic anions Corrosion resistance Aspartic acid Lauric acid
DOI	10.1016/j.jma.2020.03.013
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000640516900023
出版者	National Engg. Reaserch Center for Magnesium Alloys
EI入藏号	20204209347995
原始文献类型	Journal article (JA)
出版地	BEIJING
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.cqcet.edu.cn/handle/39TD4454/3026
专题	人工智能与大数据学院重庆电子科技职业大学
作者单位	1.State Key Laboratory of Power Transmission Equipment & System Safety and New Technology, Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing; 400044, China; 2.School of Chemical &Environmental Engineering, China University of Mining & Technology, Beijing; 100083, China; 3.Material Corrosion and Protection Key Laboratory of Sichuan Province, Institute of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong; Sichuan Province; 643000, China; 4.National Engineering Research Center for Magnesium Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing; 400044, China; 5.College of Software, Chongqing College of Electronic Engineering, Chongqing; 401331, China; 6.Key Laboratory on Optoelectronic Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing; 401331, China
推荐引用方式 GB/T 7714	Song, Yuhan,Tang, Yan,Fang, Liang,et al. Enhancement of corrosion resistance of AZ31 Mg alloys by one-step in situ synthesis of ZnAl-LDH films intercalated with organic anions (ASP, La)[J]. Journal of Magnesium and Alloys,2021,9(2):658-667.
APA	Song, Yuhan.,Tang, Yan.,Fang, Liang.,Wu, Fang.,Zeng, XianGuang.,...&Luo, HaiJun.(2021).Enhancement of corrosion resistance of AZ31 Mg alloys by one-step in situ synthesis of ZnAl-LDH films intercalated with organic anions (ASP, La).Journal of Magnesium and Alloys,9(2),658-667.
MLA	Song, Yuhan,et al."Enhancement of corrosion resistance of AZ31 Mg alloys by one-step in situ synthesis of ZnAl-LDH films intercalated with organic anions (ASP, La)".Journal of Magnesium and Alloys 9.2(2021):658-667.