| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Corrosion Behavior of Advanced Ni-based Alloys in Molten Fluoride Salt |
| Author(s) |
Ryan Gordon, Ryan Thier, Adrien Couet, Jaimie Tiley, Soumya Nag, Bruce Pint, Steve Zinkle, Kumar Sridharan |
| On-Site Speaker (Planned) |
Ryan Gordon |
| Abstract Scope |
Hastelloy N was developed to provide high corrosion resistance in molten fluoride salts in the 1960s for the Molten Salt Reactor Experiment. However, the alloy has inadequate mechanical properties at the temperatures being considered for present MSR designs. Four solid solution and carbide/gamma prime precipitation strengthened nickel alloys designed for superior creep strength have been investigated for corrosion performance in molten fluoride salt. The alloys were cast, homogenized, and annealed to achieve an equiaxed grain structure. Tests were performed in molten FLiNaK (46.5LiF-11.5NaF-42KF, mol%) salt at 700°C in PBN capsules. The corrosion performance, as measured by weight change and depth of attack, of these advanced alloys has been compared to Hastelloy N tested under similar conditions. The corrosion mechanisms have been investigated using techniques, such as SEM, EBSD, XRD, XPS, and TEM with emphasis on carbide strengthened alloys. Funding is provided through ARPA-E 2021 Project No. 2459-3358. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Other, Other |