Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt
A molten salt reactor is one of the fourth-generation reactors and is considered to be a feasible replacement for current reactors due to their many advantages. However, there are a number of issues that remain; one of which is the corrosion of the materials. Corrosion problems in molten salt reacto...
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MDPI AG
2024-09-01
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| author | Maehyun Cho Michael R. Tonks Kunok Chang |
| author_facet | Maehyun Cho Michael R. Tonks Kunok Chang |
| author_sort | Maehyun Cho |
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| description | A molten salt reactor is one of the fourth-generation reactors and is considered to be a feasible replacement for current reactors due to their many advantages. However, there are a number of issues that remain; one of which is the corrosion of the materials. Corrosion problems in molten salt reactors have been reported since The Molten Salt Reactor Experiment at Oak Ridge National Laboratory in the 1960s. There have been many attempts to mitigate the corrosion problem, but a fundamental solution has not yet been achived. In this study, surface reaction-diffusion-coupled simulations were performed to simulate the corrosion of a Ni–Cr–Fe material, a prototype of Hastelloy N, which is being promoted as a structural material for molten salt reactors in F–Li–Na–K eutectic salts. This surface reaction-diffusion-coupled simulation framework was developed to study which corrosion reactions are dominant in molten salt environment corrosion where a large number of oxidation–reduction reactions exist, the correlation between composition of alloy and corrosion rate, and the effect of Cr depletion on corrosion. |
| format | Article |
| id | doaj-art-2a9d0e571d1f4c4fa9cf2363a9773077 |
| institution | OA Journals |
| issn | 2075-4701 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj-art-2a9d0e571d1f4c4fa9cf2363a97730772025-08-20T01:55:41ZengMDPI AGMetals2075-47012024-09-01149108810.3390/met14091088Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten SaltMaehyun Cho0Michael R. Tonks1Kunok Chang2Department of Nuclear Engineering, Kyung Hee University, Yongin-si 17104, Republic of KoreaDepartment of Materials Science and Engineering, University of Florida, Gainesville, FL 32603, USADepartment of Nuclear Engineering, Kyung Hee University, Yongin-si 17104, Republic of KoreaA molten salt reactor is one of the fourth-generation reactors and is considered to be a feasible replacement for current reactors due to their many advantages. However, there are a number of issues that remain; one of which is the corrosion of the materials. Corrosion problems in molten salt reactors have been reported since The Molten Salt Reactor Experiment at Oak Ridge National Laboratory in the 1960s. There have been many attempts to mitigate the corrosion problem, but a fundamental solution has not yet been achived. In this study, surface reaction-diffusion-coupled simulations were performed to simulate the corrosion of a Ni–Cr–Fe material, a prototype of Hastelloy N, which is being promoted as a structural material for molten salt reactors in F–Li–Na–K eutectic salts. This surface reaction-diffusion-coupled simulation framework was developed to study which corrosion reactions are dominant in molten salt environment corrosion where a large number of oxidation–reduction reactions exist, the correlation between composition of alloy and corrosion rate, and the effect of Cr depletion on corrosion.https://www.mdpi.com/2075-4701/14/9/1088molten salt reactorcorrosionsurface reaction-diffusion-coupled simulation |
| spellingShingle | Maehyun Cho Michael R. Tonks Kunok Chang Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt Metals molten salt reactor corrosion surface reaction-diffusion-coupled simulation |
| title | Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt |
| title_full | Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt |
| title_fullStr | Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt |
| title_full_unstemmed | Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt |
| title_short | Surface Reaction-Diffusion-Coupled Simulation of Ni–Fe–Cr Alloy under FLiNaK Molten Salt |
| title_sort | surface reaction diffusion coupled simulation of ni fe cr alloy under flinak molten salt |
| topic | molten salt reactor corrosion surface reaction-diffusion-coupled simulation |
| url | https://www.mdpi.com/2075-4701/14/9/1088 |
| work_keys_str_mv | AT maehyuncho surfacereactiondiffusioncoupledsimulationofnifecralloyunderflinakmoltensalt AT michaelrtonks surfacereactiondiffusioncoupledsimulationofnifecralloyunderflinakmoltensalt AT kunokchang surfacereactiondiffusioncoupledsimulationofnifecralloyunderflinakmoltensalt |