Interaction effect between different constituents in silicate-containing electrolyte on PEO coatings on Mg alloy

doi:10.1016/j.surfcoat.2016.09.031

IMR OpenIR

	Interaction effect between different constituents in silicate-containing electrolyte on PEO coatings on Mg alloy
	Chen, Yan 1,2,3; Yang, Yange 1; Zhang, Tao 1; Zhang, Wei 1; FuhuiWang 1; Lu, Xiaopeng 2; Blawert, Carsten 2; Zheludkevich, Mikhail L.2
通讯作者	Zhang, Tao(zhangtao@hrbeu.edu.cn)
	2016-12-15
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	307 页码:825-836
摘要	The influence of different constituents in silicate containing alkaline electrolytes on PEO-coated AZ91D magnesium alloy has been systematically studied using response surface methodology (RSM) coupled with electrochemical measurements and microstructure characterization methods. The results indicate that the most dominant factor that determines the coating performance is the interaction between Na2SiO3 and NaOH, where better corrosion resistance could be achieved when their concentrations are tuned in different directions. Infrared spectrum analysis of the electrolytes innovatively indicates that the degree of polymerization of silicate ions (from one to two-and three-dimensional), varied by the concentration of Na2SiO3 and NaOH, influences the kinetic mechanism of coating formation and thermal-driven gel-forming process under sparking. When silicates species exist as a relatively higher polymerized state, which indicates lower mobility of silicates in the electrolyte and better affinity for trapping Al3+ to form gel-like networks, the resulting coating is inhomogeneous and susceptible to corrosive ions; otherwise, the coating is more homogeneous and exhibits improved corrosion resistance. The work herein aims to provide guidelines for designing PEO electrolyte via correlating the intrinsic nature of the electrolyte with coating properties. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Magnesium Plasma electrolytic oxidation Response surface methodology IR spectroscopy
资助者	program of Outstanding Young Scholars ; Program of Hundred Talents of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; German Academic Exchange Service
DOI	10.1016/j.surfcoat.2016.09.031
收录类别	SCI
语种	英语
资助项目	program of Outstanding Young Scholars ; Program of Hundred Talents of Chinese Academy of Sciences ; National Natural Science Foundation of China[51531007] ; Chinese Academy of Sciences ; German Academic Exchange Service
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000390622200099
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/123479
专题	中国科学院金属研究所
通讯作者	Zhang, Tao
作者单位	1.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Wencui RD 62, Shenyang 110016, Peoples R China 2.Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Plank Str 1, D-21502 Geesthacht, Germany 3.Univ Chinese Acad Sci, Yuquan RD 19, Beijing 110049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yan,Yang, Yange,Zhang, Tao,et al. Interaction effect between different constituents in silicate-containing electrolyte on PEO coatings on Mg alloy[J]. SURFACE & COATINGS TECHNOLOGY,2016,307:825-836.
APA	Chen, Yan.,Yang, Yange.,Zhang, Tao.,Zhang, Wei.,FuhuiWang.,...&Zheludkevich, Mikhail L..(2016).Interaction effect between different constituents in silicate-containing electrolyte on PEO coatings on Mg alloy.SURFACE & COATINGS TECHNOLOGY,307,825-836.
MLA	Chen, Yan,et al."Interaction effect between different constituents in silicate-containing electrolyte on PEO coatings on Mg alloy".SURFACE & COATINGS TECHNOLOGY 307(2016):825-836.