| Abstract Scope |
For Molten Salt Reactors (MSRs), the choice of structural materials remains a major challenge, particularly with regard to their resistance to corrosion under irradiation at high temperature. The mechanisms of corrosion in molten chloride environments under irradiation are complex and greatly interest the scientific community. Corrosion kinetics are most often aggravated by irradiation [1-5], but under certain conditions, the possibility of partial healing by irradiation has been suggested [6-8].
This study is part of the French Innovative System for Actinides Conversion project, it aims to explore the coupling mechanisms between molten salt corrosion and irradiation. To this end, an in-situ corrosion and irradiation chamber is currently being developed for chloride salts on the JANNuS-Saclay facility. In parallel, preliminary studies of pre-irradiation followed by corrosion, or pre-corrosion followed by irradiation, are being carried out on model nickel-based alloys (Ni, Ni-10%at. Cr, Ni-10%at. Fe, and Ni-10% Mo). In-situ irradiation-corrosion chamber and the methodology used to study materials that have been pre-corroded and then irradiated will be described. Examination of the first samples will be presented and discussed.
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[3] Lei G et al, Corrosion Science (2020)
[4] Liu M. et al, Corrosion Science (2019)
[5] Zhu H. et al, Corrosion Science (2017)
[6] Zhou W. et al, Nature Communications (2020)
[7] Zhou W. et al, Nucl. Inst. Methods B (2019)
[8] Ezell N.D.B. et al, Nuc. Eng. Technol. (2021) |