Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K

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	Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K; Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K
	T. J. Pan; Y. F. Lin; J. Hu; C. L. Zeng
	2009 ; 2009
发表期刊	High Temperature Materials and Processes ; High Temperature Materials and Processes
ISSN	0334-6455 ; 0334-6455
卷号	28 期号:4 页码:233-244
摘要	The corrosion of Fe and Ni covered with a molten film of 0.55ZnCl(2)-0.45KCl was examined in air at 673K by the electrochemical-impedance spectroscopy (EIS) technique. Meanwhile, the impedance behavior for Fe and Ni immersed in the deep salt was also studied for comparison. The EIS for Fe beneath a thin salt film and in deep salt both showed a semicircle at high frequency and a line at low frequency, indicating a diffusion: controlled reaction, but with much larger impedance in deep salt. The corrosion of Ni beneath a salt film was composed of two stages with different EIS features. The initial Nyquist plots also showed the characteristics of a diffusion-controlled reaction, as for the impedance features of Ni in deep salt, but converted into two capacitance loops at longer times. Equivalent circuits representing the corrosion of Fe and Ni were proposed to fit the corresponding impedance spectra and electrochemical parameters in the equivalent circuit were calculated.; The corrosion of Fe and Ni covered with a molten film of 0.55ZnCl(2)-0.45KCl was examined in air at 673K by the electrochemical-impedance spectroscopy (EIS) technique. Meanwhile, the impedance behavior for Fe and Ni immersed in the deep salt was also studied for comparison. The EIS for Fe beneath a thin salt film and in deep salt both showed a semicircle at high frequency and a line at low frequency, indicating a diffusion: controlled reaction, but with much larger impedance in deep salt. The corrosion of Ni beneath a salt film was composed of two stages with different EIS features. The initial Nyquist plots also showed the characteristics of a diffusion-controlled reaction, as for the impedance features of Ni in deep salt, but converted into two capacitance loops at longer times. Equivalent circuits representing the corrosion of Fe and Ni were proposed to fit the corresponding impedance spectra and electrochemical parameters in the equivalent circuit were calculated.
部门归属	[pan, t. j.; lin, y. f.; hu, j.] jiangsu polytech univ, dept mat sci & engn, changzhou 213164, peoples r china. [pan, t. j.; zeng, c. l.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;pan, tj (reprint author), jiangsu polytech univ, dept mat sci & engn, changzhou 213164, peoples r china;tjpan2005@gmail.com ; [pan, t. j.; lin, y. f.; hu, j.] jiangsu polytech univ, dept mat sci & engn, changzhou 213164, peoples r china. [pan, t. j.; zeng, c. l.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;pan, tj (reprint author), jiangsu polytech univ, dept mat sci & engn, changzhou 213164, peoples r china;tjpan2005@gmail.com
关键词	Fe Fe Ni Ni Zncl(2)-kcl Zncl(2)-kcl Eis Eis Impedance Models Impedance Models Atmospheric Corrosion Atmospheric Corrosion Hydrogen-chloride Hydrogen-chloride Salt Corrosion Salt Corrosion Hot Corrosion Hot Corrosion Na2so4 Film Na2so4 Film Environment Environment Oxidation Oxidation Alloys Alloys Steels Steels Iron Iron
URL	查看原文 ; 查看原文
WOS记录号	WOS:000276803100006 ; WOS:000276803100006
引用统计	被引频次：3[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/321006/32225
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. J. Pan,Y. F. Lin,J. Hu,et al. Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K, Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K[J]. High Temperature Materials and Processes, High Temperature Materials and Processes,2009, 2009,28, 28(4):233-244, 233-244.
APA	T. J. Pan,Y. F. Lin,J. Hu,&C. L. Zeng.(2009).Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K.High Temperature Materials and Processes,28(4),233-244.
MLA	T. J. Pan,et al."Electrochemical-Impedance-Spectroscopy Study of Corrosion of Fe and Ni with Molten ZnCl2-KCl Coating in Air at 673K".High Temperature Materials and Processes 28.4(2009):233-244.