A comparative study and optimization of corrosion resistance of ZnAl layered double hydroxides films intercalated with different anions on AZ31 Mg alloys

doi:10.1016/j.surfcoat.2018.11.070

	A comparative study and optimization of corrosion resistance of ZnAl layered double hydroxides films intercalated with different anions on AZ31 Mg alloys
	Tang, Yan 1; Wu, Fang 1; Fang, Liang 1,2; Guan, Ting 1,3; Hu, Jia 1; Zhang, ShuFang4
	2019-01-25
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	358 页码:594-603
摘要	Layered double hydroxides (LDHs) have great potential as protective coatings on magnesium alloys due to their nanolamellar structure and exchangeability of interlayer anions. ZnAl layered double hydroxides films intercalated with nitrate anions (ZnAl-NO3−-LDHs) was synthesized on the AZ31 magnesium alloy by hydrothermal method. In order to obtain better corrosion resistance, ZnAl-X-LDHs (X = Cl−, VO43−, PO43−, or MoO42−) were prepared by using ZnAl-NO3−-LDHs as a precursor, and Cl−, VO43−, PO43−, and MoO42− anions intercalated into the LDHs interlayers to replace NO3− through anion-exchange reaction. X-ray diffraction (XRD), scanning electronic microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy were used to investigate structure, morphology and composition of the ZnAl-LDHs. The corrosion resistance of ZnAl-LDHs intercalated with different anions was compared by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The results show that the corrosion resistance of ZnAl-LDHs films is ranged in order as follows: ZnAl-VO43−-LDHs > ZnAl-MoO42−-LDHs > ZnAl-PO43−LDHs > ZnAl-Cl−LDHs > ZnAl-NO3−LDHs. ZnAl-VO43−-LDHs has the largest basal spacing distances d(003) value and strongest ability to release anions and absorb chloride ions, so ZnAl-VO43−-LDHs films has the optimal corrosion resistance and can provide enhanced anticorrosion protection for magnesium alloys substrate. © 2018 Elsevier B.V.
关键词	Aluminum alloys Aluminum metallography Binary alloys Chlorine compounds Corrosion protection Corrosion resistance Corrosion resistant alloys Electrochemical corrosion Electrochemical impedance spectroscopy Fourier transform infrared spectroscopy Magnesium alloys Morphology Negative ions Polarization Potentiodynamic polarization Protective coatings Zinc alloys Zinc metallography Anion exchange Anticorrosion protection Electrochemical impedance spectroscopy measurements Fourier transform infra red (FTIR) spectroscopy Layered double hydroxides Morphology and composition Scanning electronic microscopy (SEM) Zn-Al layered double hydroxides
DOI	10.1016/j.surfcoat.2018.11.070
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000456762300070
出版者	Elsevier B.V., Netherlands
EI入藏号	20184906203571
EI分类号	539.1 Metals Corrosion ; 539.2 Corrosion Protection ; 541.1 Aluminum ; 541.2 Aluminum Alloys ; 542.2 Magnesium and Alloys ; 546.3 Zinc and Alloys ; 801 Chemistry ; 942.2 Electric Variables Measurements ; 951 Materials Science
原始文献类型	Journal article (JA)
出版地	LAUSANNE
引用统计	被引频次：81[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/39TD4454/3059
专题	人工智能与大数据学院
作者单位	1.State Key Laboratory of Mechanical Transmission, Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing; 400044, China; 2.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; 3.Shanxi Institute of Energy, No. 63, Yuci District, Jinzhong; ShanXi Province; 030600, China; 4.College of Software, Chongqing College of Electronic Engineering, Chongqing; 401331, China
推荐引用方式 GB/T 7714	Tang, Yan,Wu, Fang,Fang, Liang,et al. A comparative study and optimization of corrosion resistance of ZnAl layered double hydroxides films intercalated with different anions on AZ31 Mg alloys[J]. SURFACE & COATINGS TECHNOLOGY,2019,358:594-603.
APA	Tang, Yan,Wu, Fang,Fang, Liang,Guan, Ting,Hu, Jia,&Zhang, ShuFang.(2019).A comparative study and optimization of corrosion resistance of ZnAl layered double hydroxides films intercalated with different anions on AZ31 Mg alloys.SURFACE & COATINGS TECHNOLOGY,358,594-603.
MLA	Tang, Yan,et al."A comparative study and optimization of corrosion resistance of ZnAl layered double hydroxides films intercalated with different anions on AZ31 Mg alloys".SURFACE & COATINGS TECHNOLOGY 358(2019):594-603.