| Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution | |
| Yuan, Xuwen1,2,3; Wang, Xuan2,3; Yang, Huaiyu2 | |
| Corresponding Author | Yang, Huaiyu(hyyang@imr.ac.cn) |
| 2022-03-01 | |
| Source Publication | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| ISSN | 0013-4651 |
| Volume | 169Issue:3Pages:9 |
| Abstract | The degradation behavior of four prepassivated stainless steels (SSs) in the alkaline solutions with different Cl- concentrations and pH values were investigated by cyclic potentiodynamic polarization (CPP), electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis and the X-ray photoelectron spectroscopy (XPS). The results indicated that the pH value and Cl- concentration, together with the phase ratio difference in the microstructure of SS, played a critical role in the degradation process of passive film. At low pH and high Cl- concentration, the passive film gradually enriched in Fe3+ and Cr3+ species and depleted in Fe2+ oxides and its self-regeneration process became more difficult. As the pH decreased, the passive film exhibited clear n-type and p-type semiconductor characteristics more clearly, and the decrease in dopant density well reflected the changes in Fe2+/Fe3+ ratio and electrochemical behavior. Based on the viewpoint of adsorption balance between OH- with inhibitory effect and Cl- with promotion effect on the degradation process, a mechanism for the degradation process of prepassivation film was proposed. |
| Funding Organization | National Basic Research Program of China |
| DOI | 10.1149/1945-7111/ac595b |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Basic Research Program of China[2015CB655105] |
| WOS Research Area | Electrochemistry ; Materials Science |
| WOS Subject | Electrochemistry ; Materials Science, Coatings & Films |
| WOS ID | WOS:000767563800001 |
| Publisher | ELECTROCHEMICAL SOC INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173196 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, Huaiyu |
| Affiliation | 1.Hubei Univ Automot Technol, Dept Mat Sci & Engn, Shiyan 442002, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| Recommended Citation GB/T 7714 | Yuan, Xuwen,Wang, Xuan,Yang, Huaiyu. Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2022,169(3):9. |
| APA | Yuan, Xuwen,Wang, Xuan,&Yang, Huaiyu.(2022).Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,169(3),9. |
| MLA | Yuan, Xuwen,et al."Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 169.3(2022):9. |
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