Corrosion resistance of a ceria/polymethyltrimethoxysilane modified Mg-Al-layered double hydroxide on AZ31 magnesium alloy

doi:10.1016/j.jallcom.2018.06.152

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	Corrosion resistance of a ceria/polymethyltrimethoxysilane modified Mg-Al-layered double hydroxide on AZ31 magnesium alloy
	Yao, QS ; Zhang, F ; Song, L ; Zeng, RC ; Cui, LY ; Li, SQ ; Wang, ZL ; Han, EH
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-10-05
卷号	764 页码:913-928
关键词	Magnesium alloy Polymer coating SEM XPS EIS Pitting corrosion
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.06.152
英文摘要	A Mg-Al-layered double hydroxide (LDH) coating modified with methyltrimethoxysilane (MTMS) and cerium nitrate was prepared on AZ31 magnesium alloy substrate via a hydrothermal process and subsequent the immersion treatment. The surface morphologies and chemical compositions were investigated using FE-SEM, XRD, FT-IR and XPS. These results indicated that the composite coatings were consisted of polymethyltrimethoxysilane (PMTMS) and CeO2. The adherence between the PMTMS/CeO2 coating and the LDH coating was significantly improved with the formation of Si-O-Si and Si-O-Mg chemical bonds. Electrochemical tests and hydrogen evolution illustrated that the optimum corrosion resistance of the composite coating was obtained in presence of 10(-3) mol/L cerium nitrate. In addition, experimental data proved that addition of an excess of cerium nitrate was bad for coating formation. Finally, the coating corrosion mechanism was proposed and discussed. (C) 2018 Elsevier B.V. All rights reserved.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000444058300111
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79905]
专题	金属研究所_中国科学院金属研究所
作者单位	1.[Yao, Qing-Song 2.Zhang, Fen 3.Song, Liang 4.Zeng, Rong-Chang 5.Cui, Lan-Yue 6.Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Peoples R China 7.Chongqing Univ Technol, Coll Mat Sci & Engn, Chongqing 400065, Peoples R China 8.Chinese Acad Sci, Inst Met Res, Natl Engn Ctr Corros Control, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yao, QS,Zhang, F,Song, L,et al. Corrosion resistance of a ceria/polymethyltrimethoxysilane modified Mg-Al-layered double hydroxide on AZ31 magnesium alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,764:913-928.
APA	Yao, QS.,Zhang, F.,Song, L.,Zeng, RC.,Cui, LY.,...&Han, EH.(2018).Corrosion resistance of a ceria/polymethyltrimethoxysilane modified Mg-Al-layered double hydroxide on AZ31 magnesium alloy.JOURNAL OF ALLOYS AND COMPOUNDS,764,913-928.
MLA	Yao, QS,et al."Corrosion resistance of a ceria/polymethyltrimethoxysilane modified Mg-Al-layered double hydroxide on AZ31 magnesium alloy".JOURNAL OF ALLOYS AND COMPOUNDS 764(2018):913-928.