| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Molten Chloride Salt Corrosion in Ni based Vs Fe based Alloys |
| Author(s) |
Brendan Dsouza, Weiqian Zhuo, Jinsuo Zhang |
| On-Site Speaker (Planned) |
Brendan Dsouza |
| Abstract Scope |
Molten chloride salt is considered as a potential candidate for the next generation Molten Salt Reactors (MSR), however, they pose grave challenges due to their corrosive nature at higher temperatures (+600°C) where the mechanism is an impurity driven process. In this study, appropriate thermal and chemical purification processes have been developed for the NaCl-KCl- MgCl2 (5.1-48.1-46.8 mol%) salt to remove the oxygen and moisture bearing impurities. Static corrosion tests were conducted for Ni based (H-230 and C-276) and Fe based (709-4B2 and SS316/L) alloys using the purified salt at 800°C for 100 hours in an inert Ar gas environment. The alloys exhibited extensive pitting with severe Cr depletion near the surface. The corrosion rates were found to be in the increasing order of SS316/L > 709-4B2 > H-230 > C276. Higher Mo content in the matrix has shown considerable increase in resistance of the alloy against chloride salt attack. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |