Electrochemical impedance spectroscope analysis of microwave absorbing coatings on magnesium alloy in 3.5 wt.% NaCl solution

IMR OpenIR

	Electrochemical impedance spectroscope analysis of microwave absorbing coatings on magnesium alloy in 3.5 wt.% NaCl solution
	Q. Z. Guo; K. Q. Du; X. H. Guo; F. H. Wang
	2013
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	98 页码:190-198
摘要	Two microwave absorbing coatings (MACs) are applied onto magnesium alloy substrate and are studied using electrochemical impedance spectroscopy (EIS) during immersion in 3.5% NaCl solution. The diffusion behavior of electrolyte through the MACs was firstly studied. The result shows that electrolyte transfers significantly fast in carbonyl iron loaded coating than barium ferrite loaded coating. In order to account for the distribution of different absorbents on corrosion process, a modified equivalent circuit with a distribute transmission line model was proposed to fit EIS spectra of MACs. Simulated EIS diagrams agree very well with experimental spectra of 25% and 50% PVC MACs. Moreover, simulation data was studied to analyze degeneration of two MACs. The result shows that the corrosion of Cl particles plays an important role for failure of Cl coating, but the degeneration of BF coatings which were slower than Cl coating was ascribed to defects within the coating. (C) 2013 Elsevier Ltd. All rights reserved.
部门归属	[guo, quanzhong ; du, keqin ; guo, xinhua ; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; du, kq (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; kqdu@imr.ac.cn
关键词	Microwave Absorbing Coating Magnesium Alloy Electrochemical Impedance Spectroscopy Transmission Line Model Water Transport Behaviors Absorption Composites Models Iron Eis
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71233
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Z. Guo,K. Q. Du,X. H. Guo,et al. Electrochemical impedance spectroscope analysis of microwave absorbing coatings on magnesium alloy in 3.5 wt.% NaCl solution[J]. Electrochimica Acta,2013,98:190-198.
APA	Q. Z. Guo,K. Q. Du,X. H. Guo,&F. H. Wang.(2013).Electrochemical impedance spectroscope analysis of microwave absorbing coatings on magnesium alloy in 3.5 wt.% NaCl solution.Electrochimica Acta,98,190-198.
MLA	Q. Z. Guo,et al."Electrochemical impedance spectroscope analysis of microwave absorbing coatings on magnesium alloy in 3.5 wt.% NaCl solution".Electrochimica Acta 98(2013):190-198.