Electrochemical impedance study of corrosion of pure Ni, Fe, Cr, and Fe-5Cr alloy in molten nitrides
文献类型：期刊论文
| 作者 | Zhao, Guangyao1; Han, Yu1; Yang, Lingxu2; Wang, Ying2; Zeng, Chaoliu2 |
| 刊名 | MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
 |
| 出版日期 | 2024-01-11 |
| 页码 | 10 |
| 关键词 | corrosion electrochemical impedance spectroscopy Fe-Cr alloys molten nitrates pure metals |
| ISSN号 | 0947-5117 |
| DOI | 10.1002/maco.202314166 |
| 通讯作者 | Yang, Lingxu(yang_ling_xu@126.com) |
| 英文摘要 | Molten nitrates or nitrate-nitrite mixtures have been used as heat transfer fluid as well as thermal energy storage medium in concentrated solar power plants and other industrial applications. However, containment materials in contact with these molten salts are subjected to molten salt corrosion, which has been a concern over the years. In this investigation, the corrosion behavior of pure Ni, Fe, Cr, and Fe-5Cr alloy (in weight percent) has been examined at 400 degrees C in molten nitrates using electrochemical impedance spectroscopy and gravimetric tests. It is shown that Ni, Fe, and Fe-5Cr exhibit mass gain, with the best corrosion resistance for Ni followed by Fe-5Cr and Fe, while pure Cr goes through fast dissolution, forming hexavalent chromium product K3Na(CrO4)2. The increase of salt basicity from Solar Salt to Hitec could accelerate the dissolution of Cr. Nevertheless, the formation of an inner Cr-containing scale could still offer the alloy good protection because the external insoluble Ni or Fe oxides can protect it from dissolution. In this investigation, the corrosion behavior of pure Ni, Fe, Cr, and Fe-5Cr alloy has been examined at 400 degrees C in molten nitrates using electrochemical impedance spectroscopy.image |
| 资助项目 | None |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001140192400001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | None |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Lingxu |
| 作者单位 | 1.State Grid Smart Grid Res Inst Co Ltd, State Key Lab Adv Power Transmiss Technol, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Guangyao,Han, Yu,Yang, Lingxu,et al. Electrochemical impedance study of corrosion of pure Ni, Fe, Cr, and Fe-5Cr alloy in molten nitrides[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2024:10. |
| APA | Zhao, Guangyao,Han, Yu,Yang, Lingxu,Wang, Ying,&Zeng, Chaoliu.(2024).Electrochemical impedance study of corrosion of pure Ni, Fe, Cr, and Fe-5Cr alloy in molten nitrides.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,10. |
| MLA | Zhao, Guangyao,et al."Electrochemical impedance study of corrosion of pure Ni, Fe, Cr, and Fe-5Cr alloy in molten nitrides".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION (2024):10. |
入库方式： OAI收割
来源：金属研究所
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