About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Investigating the Corrosion of NITE-SiC/SiC in Fluoride-Bearing Molten Salts |
| Author(s) |
Keshav Vasudeva, Weiyue Zhou, Wande Cairang, Nayoung Kim, Michael P. Short, Sara E. Ferry |
| On-Site Speaker (Planned) |
Keshav Vasudeva |
| Abstract Scope |
Silicon carbide-based materials are candidates for the vacuum-vessel of future fusion power plants. Despite their advantages, the chemical compatibility of sintered SiC with molten salts remains a concern. We will present results on the impact of exposure to fluoride-bearing molten salts (FLiNaK, LiF-NaF, and FLiBe) on NITE-SiC/SiC. Through this study, emphasis will be put on understanding the effect of the sintering additives (Al2O3, Y2O¬3 and SiO2), salt type and temperature on corrosion behavior. Exposure to FLiNaK has shown aggressive corrosion, facilitated primarily through Al2O3, with LiF-NaF corrosion being less aggressive. SEM/EDS were used to characterize the microstructural changes induced by corrosion; XPS was used to shed light on the corrosion mechanism through investigation of charged states; Raman Spectroscopy was used to determine the residual stress which may have played a role in crack formation during exposure to molten salts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Nuclear Materials, Environmental Effects |