Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal
Deep geological disposal using a multibarrier system is a promising solution for treating high-level radioactive (HLRW) waste. The HLRW canister represents the first barrier for the migration of radionuclides into the biosphere, therefore, the corrosion behavior of canister materials is of significa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573322003503 |
| _version_ | 1828090599431995392 |
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| author | Gha-Young Kim Junhyuk Jang Minsoo Lee Mihye Kong Seok Yoon |
| author_facet | Gha-Young Kim Junhyuk Jang Minsoo Lee Mihye Kong Seok Yoon |
| author_sort | Gha-Young Kim |
| collection | DOAJ |
| description | Deep geological disposal using a multibarrier system is a promising solution for treating high-level radioactive (HLRW) waste. The HLRW canister represents the first barrier for the migration of radionuclides into the biosphere, therefore, the corrosion behavior of canister materials is of significance. In this study, the electrochemical behaviors of SS316L, Ti-Gr.2, Alloy 22, and Cu in naturally aerated KAERI underground research tunnel (KURT) groundwater solutions were examined. The corrosion potential, current, and impedance spectra of the test materials were recorded using electrochemical methods. According to polarization and impedance measurements, Cu exhibits relatively higher corrosion rates and a lower corrosion resistance ability than those exhibited by the other materials in the given groundwater condition. In the anodic dissolution tests, SS316L exposed to the groundwater solution exhibited the most uniform corrosion, as indicated by its surface roughness. This phenomenon could be attributed to the extremely low concentration of chloride ions in KURT groundwater. |
| first_indexed | 2024-04-11T05:59:06Z |
| format | Article |
| id | doaj.art-d104870a8fbb455ea482a26bfa01da42 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-11T05:59:06Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-d104870a8fbb455ea482a26bfa01da422022-12-22T04:41:47ZengElsevierNuclear Engineering and Technology1738-57332022-12-01541244744480Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposalGha-Young Kim0Junhyuk Jang1Minsoo Lee2Mihye Kong3Seok Yoon4Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseongu, Daejeon, 34057, South Korea; Corresponding author.Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseongu, Daejeon, 34057, South KoreaDisposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseongu, Daejeon, 34057, South KoreaDisposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseongu, Daejeon, 34057, South KoreaDisposal Safety Evaluation Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseongu, Daejeon, 34057, South KoreaDeep geological disposal using a multibarrier system is a promising solution for treating high-level radioactive (HLRW) waste. The HLRW canister represents the first barrier for the migration of radionuclides into the biosphere, therefore, the corrosion behavior of canister materials is of significance. In this study, the electrochemical behaviors of SS316L, Ti-Gr.2, Alloy 22, and Cu in naturally aerated KAERI underground research tunnel (KURT) groundwater solutions were examined. The corrosion potential, current, and impedance spectra of the test materials were recorded using electrochemical methods. According to polarization and impedance measurements, Cu exhibits relatively higher corrosion rates and a lower corrosion resistance ability than those exhibited by the other materials in the given groundwater condition. In the anodic dissolution tests, SS316L exposed to the groundwater solution exhibited the most uniform corrosion, as indicated by its surface roughness. This phenomenon could be attributed to the extremely low concentration of chloride ions in KURT groundwater.http://www.sciencedirect.com/science/article/pii/S1738573322003503CanisterCorrosionGeological deep disposalKAERI underground research tunnel groundwaterPolarizationImpedance |
| spellingShingle | Gha-Young Kim Junhyuk Jang Minsoo Lee Mihye Kong Seok Yoon Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal Nuclear Engineering and Technology Canister Corrosion Geological deep disposal KAERI underground research tunnel groundwater Polarization Impedance |
| title | Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal |
| title_full | Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal |
| title_fullStr | Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal |
| title_full_unstemmed | Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal |
| title_short | Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal |
| title_sort | corrosion behaviors of ss316l ti gr 2 alloy 22 and cu in kurt groundwater solutions for geological deep disposal |
| topic | Canister Corrosion Geological deep disposal KAERI underground research tunnel groundwater Polarization Impedance |
| url | http://www.sciencedirect.com/science/article/pii/S1738573322003503 |
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