| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Investigating the effects of helium-ion irradiation on the corrosivity of FLiNaK molten salt |
| Author(s) |
Adria Peterkin, Weiyue Zhou, Mike PhD Short |
| On-Site Speaker (Planned) |
Adria Peterkin |
| Abstract Scope |
Molten salts are being investigated as a fuel, coolant, and breeding blanket in nuclear fission and fusion reactors. Previous experiments have shown that H+ irradiation decelerates the corrosion of Ni-20Cr in FLiNaK+EuF3. The deceleration was attributed to radiation-enhanced diffusion, by increasing bulk diffusion leading to rapid replenishment of nobler species to the surface. In this study, we assess the mechanism(s) of how radiation affects the corrosion of Ni-20Cr, in molten fluoride salts. One hypothesis is that injected protons act as a hydrogen impurity, increasing corrosivity. To decouple the impurity effect from the salt, He2+ is used as a chemically neutral species to induce radiolysis without the hydrogen impurity injection. Here we use a 6.1 MeV He2+ ion beam to traverse a sample foil corroded by FLiNaK+EuF3. Separating the radiation and impurity effect will enable us to accurately predict the severity of radiation-affected corrosion in nuclear reactors before they come online. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, |