About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Synergistic Irradiation, Corrosion, and Microstructural Evolution in Nuclear Materials
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Presentation Title |
On the Use of Corrosion Electrochemistry in Understanding Materials Corrosion in Molten FLiNaK Salts |
Author(s) |
Ho Lun Chan, Elena Romanovskaia, Raluca Scarlat, Peter Hosemann, John R Scully |
On-Site Speaker (Planned) |
Ho Lun Chan |
Abstract Scope |
Molten salt nuclear reactor has become a global thrust of clean nuclear energy development through a collaborative effort between academia, national laboratories, and industries. However, our understanding on the corrosion process and subsequent rates of structural materials in these environments is very limited. The combination of in-situ and ex-situ characterization approaches provide new insight of the time dependent processes taking place. In this presentation, an in-situ electrochemical method was developed and employed to study the electrochemical corrosion process of pure metals (Cr, Fe, Ni), Ni-Cr, and Fe-Cr alloys in a molten LiF-NaF-KF eutectic salt mixture at 600°C. A systemic set of experiments, including electrochemical impedance spectroscopy, potentiodynamic polarization, mass loss measurement, was performed on these materials over at least 50 hours of exposure. The composition of salts was monitored using cyclic voltammetry with various sensing electrodes during the corrosion of candidate materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, High-Temperature Materials, Other |