Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water
The structure and composition of the oxide layer on the surface of 316L stainless steel (SS) after exposure to alkaline high-temperature and high-pressure water for 2000 h are characterized using various analytical techniques. The oxide layer has a double-layer structure comprising an outer spinel o...
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MDPI AG
2025-05-01
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| author | Bin Zhang Congbin Zhu Xiaoping Zou Haodong Wu Jian Xu |
| author_facet | Bin Zhang Congbin Zhu Xiaoping Zou Haodong Wu Jian Xu |
| author_sort | Bin Zhang |
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| description | The structure and composition of the oxide layer on the surface of 316L stainless steel (SS) after exposure to alkaline high-temperature and high-pressure water for 2000 h are characterized using various analytical techniques. The oxide layer has a double-layer structure comprising an outer spinel oxide and an inner Cr oxide. With an increase in exposure time, the thickness of the inner oxide layer increases and stabilizes at approximately 100 nm. The spinel oxide dissolves after 336 h of exposure, and the dissolution increases with increasing exposure time. The adsorptive capacity of OH<sup>−</sup> on the NiFe<sub>2</sub>O<sub>4</sub> surface is explained using density functional theory (DFT) calculations. The energy released by the strong adsorption of OH<sup>−</sup> on the surface of NiFe<sub>2</sub>O<sub>4</sub> provides the impetus for the dissolution of NiFe<sub>2</sub>O<sub>4</sub>, so that NiFe<sub>2</sub>O<sub>4</sub> dissolves in the experimental environment. |
| format | Article |
| id | doaj-art-69850e8b389a4e84b89e1a01f867735c |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj-art-69850e8b389a4e84b89e1a01f867735c2025-08-20T03:29:39ZengMDPI AGMetals2075-47012025-05-0115660210.3390/met15060602Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure WaterBin Zhang0Congbin Zhu1Xiaoping Zou2Haodong Wu3Jian Xu4China Nuclear Power Engineering Co., Ltd., No. 18, Baolong 3rd Road, Baolong Community, Baolong Subdistrict, Longgang District, Shenzhen 518116, ChinaChina Nuclear Power Engineering Co., Ltd., No. 18, Baolong 3rd Road, Baolong Community, Baolong Subdistrict, Longgang District, Shenzhen 518116, ChinaChina Nuclear Power Engineering Co., Ltd., No. 18, Baolong 3rd Road, Baolong Community, Baolong Subdistrict, Longgang District, Shenzhen 518116, ChinaSchool of Materials, Sun Yat-Sen University, Shenzhen Campus, Shenzhen 518107, ChinaSchool of Materials, Sun Yat-Sen University, Shenzhen Campus, Shenzhen 518107, ChinaThe structure and composition of the oxide layer on the surface of 316L stainless steel (SS) after exposure to alkaline high-temperature and high-pressure water for 2000 h are characterized using various analytical techniques. The oxide layer has a double-layer structure comprising an outer spinel oxide and an inner Cr oxide. With an increase in exposure time, the thickness of the inner oxide layer increases and stabilizes at approximately 100 nm. The spinel oxide dissolves after 336 h of exposure, and the dissolution increases with increasing exposure time. The adsorptive capacity of OH<sup>−</sup> on the NiFe<sub>2</sub>O<sub>4</sub> surface is explained using density functional theory (DFT) calculations. The energy released by the strong adsorption of OH<sup>−</sup> on the surface of NiFe<sub>2</sub>O<sub>4</sub> provides the impetus for the dissolution of NiFe<sub>2</sub>O<sub>4</sub>, so that NiFe<sub>2</sub>O<sub>4</sub> dissolves in the experimental environment.https://www.mdpi.com/2075-4701/15/6/602316L stainless steeldissolutionDFTTEMheat absorption/release |
| spellingShingle | Bin Zhang Congbin Zhu Xiaoping Zou Haodong Wu Jian Xu Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water Metals 316L stainless steel dissolution DFT TEM heat absorption/release |
| title | Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water |
| title_full | Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water |
| title_fullStr | Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water |
| title_full_unstemmed | Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water |
| title_short | Atomic Revealing of the Dissolution Behavior of Spinel Oxides on the 316L Surface in Alkaline High-Temperature and High-Pressure Water |
| title_sort | atomic revealing of the dissolution behavior of spinel oxides on the 316l surface in alkaline high temperature and high pressure water |
| topic | 316L stainless steel dissolution DFT TEM heat absorption/release |
| url | https://www.mdpi.com/2075-4701/15/6/602 |
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