Electrochemical-Impedance-Spectroscopy (EIS) Study of Corrosion of Steels 12CrMoV and SS304 Beneath a Molten ZnCl(2)-KCl Film at 400 A degrees C in Air

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	Electrochemical-Impedance-Spectroscopy (EIS) Study of Corrosion of Steels 12CrMoV and SS304 Beneath a Molten ZnCl(2)-KCl Film at 400 A degrees C in Air
	T. J. Pan; W. M. Lu; Y. J. Ren; W. T. Wu; C. L. Zeng
	2009
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	72 期号:3-4 页码:179-190
摘要	The corrosion resistance of 12CrMoV and SS304 steels in contact with a molten mixture of (55-45) mol.% ZnCl(2)-KCl, similar to that found in waste-incineration plants, has been examined in air at 400 A degrees C by the electrochemical-impedance-spectroscopy (EIS) technique. The initial Nyquist plots of 12CrMoV showed a semicircle at high frequency and a line at low frequency indicating a diffusion-controlled reaction. At a later stage, the Nyquist plots are composed of a small semi-circle at high frequency, a line at medium frequency and a large semi-circle at low frequency, similar to that shown by SS304 during the whole experimental test. The larger impedance of SS304 as compared to 12CrMoV may be attributed to the presence of Ni and to the higher Cr content of SS304. Equivalent circuits representing the features of the corrosion of 12CrMoV and SS304 are proposed to fit the corresponding impedance spectra, and the electrochemical parameters in the equivalent circuits are calculated.
部门归属	[pan, t. j.; lu, w. m.; ren, y. j.; wu, w. t.; zeng, c. l.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. [pan, t. j.] jiangsu polytech univ, sch mat sci & engn, changzhou 213164, peoples r china.;zeng, cl (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, peoples r china;clzeng@imr.ac.cn
关键词	Ss304 12crmov Zncl(2)-kcl Hot Corrosion Impedance Models Atmospheric Corrosion Salt Corrosion Reaction Model Hot Corrosion Na2so4 Film Dissolution Chlorides Electrode Alloy Iron
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32226
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. J. Pan,W. M. Lu,Y. J. Ren,et al. Electrochemical-Impedance-Spectroscopy (EIS) Study of Corrosion of Steels 12CrMoV and SS304 Beneath a Molten ZnCl(2)-KCl Film at 400 A degrees C in Air[J]. Oxidation of Metals,2009,72(3-4):179-190.
APA	T. J. Pan,W. M. Lu,Y. J. Ren,W. T. Wu,&C. L. Zeng.(2009).Electrochemical-Impedance-Spectroscopy (EIS) Study of Corrosion of Steels 12CrMoV and SS304 Beneath a Molten ZnCl(2)-KCl Film at 400 A degrees C in Air.Oxidation of Metals,72(3-4),179-190.
MLA	T. J. Pan,et al."Electrochemical-Impedance-Spectroscopy (EIS) Study of Corrosion of Steels 12CrMoV and SS304 Beneath a Molten ZnCl(2)-KCl Film at 400 A degrees C in Air".Oxidation of Metals 72.3-4(2009):179-190.