Corrosion behavior of pure zinc and its alloy under thin electrolyte layer

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	Corrosion behavior of pure zinc and its alloy under thin electrolyte layer
	L. Y. Zheng; F. H. Cao; W. J. Liu; B. L. Jia; J. Q. Zhang
	2010
发表期刊	Acta Metallurgica Sinica-English Letters
ISSN	1006-7191
卷号	23 期号:6 页码:416-430
摘要	The corrosion behavior of zinc and its alloy under thin electrolyte layers (TEL) in 0.1M NaCl solution was investigated by cathodic polarization curves and EIS. There was only one phase in pure zinc while zinc alloy consisted of eutectic phase and primary phase. Corrosion rate of zinc alloy was faster than that of pure zinc due to the effect of the micro-galvanic couples between the primary phase and the eutectic phase. The results indicated that corrosion rate of zinc alloy was greatly enhanced under TEL than that in bulk solution. Pure zinc exhibited minimum corrosion resistance as TEL decreased to 198 mu m. Zinc and its alloy exhibited localized corrosion under TEL while it was more uniform in bulk solution. There were two capacitive loops in high frequency (HF) and middle frequency (MF) respectively, with finite length diffusion in low frequency (LF) presented in EIS. For pure zinc under TEL below 300 mu m an additional inductive loop presented in MF-LF. The corrosion products and morphology were respectively examined by X-ray diffraction (XRD), FTIR (Fourier Transform Infra Red) and SEM-EDS. FTIR micro spectroscopy results indicated that the component of the corrosion products was similar at different section of the specimen surface but different in content.
部门归属	[zheng, liyun; cao, fahe; liu, wenjuan; jia, bingli; zhang, jianqing] zhejiang univ, dept chem, hangzhou 310027, peoples r china. [zhang, jianqing] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;cao, fh (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;nelson_cao@zju.edu.cn
关键词	Thin Electrolyte Layers Eis Cathodic Polarization Ftir Micro Spectroscopy Sem Electrochemical Impedance Spectroscopy Initial Atmospheric Corrosion Sodium-chloride Solution Coated Steel Galvanized Steel Galfan Alloy Products Aluminum Nacl Eis
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WOS记录号	WOS:000291128600003
引用统计	被引频次：11[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/321006/31758
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Zheng,F. H. Cao,W. J. Liu,et al. Corrosion behavior of pure zinc and its alloy under thin electrolyte layer[J]. Acta Metallurgica Sinica-English Letters,2010,23(6):416-430.
APA	L. Y. Zheng,F. H. Cao,W. J. Liu,B. L. Jia,&J. Q. Zhang.(2010).Corrosion behavior of pure zinc and its alloy under thin electrolyte layer.Acta Metallurgica Sinica-English Letters,23(6),416-430.
MLA	L. Y. Zheng,et al."Corrosion behavior of pure zinc and its alloy under thin electrolyte layer".Acta Metallurgica Sinica-English Letters 23.6(2010):416-430.