| 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 | |
| Source Publication | High Temperature Materials and Processes
 ; High Temperature Materials and Processes
|
| ISSN | 0334-6455 ; 0334-6455 |
| Volume | 28Issue:4Pages:233-244 |
| Abstract | 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. |
| description.department | [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 |
| Keyword | 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 ID | WOS:000276803100006 ; WOS:000276803100006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/32225 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation 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. |
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