About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
In-Situ Corrosion Behavior of Inconel-625 in Flowing Molten Salt via Radioisotope Tracing in a Natural Convection Microloop |
| Author(s) |
Jagadeesh Sure, Bhagwat Ghule, Rishi Pillai, Aaron G. Penders, Cole Evered, Ivan Mitchell, Cody Falconer, Kaustubh K. Bawane, Yafei Wang, Jonathan W. Engle, Adrien Couet |
| On-Site Speaker (Planned) |
Adrien Couet |
| Abstract Scope |
Inconel-625 is a candidate alloy for structural components in TerraPower’s Molten Chloride Fast Reactor, where a NaCl–MgCl₂ mixture serves as both the coolant and fuel solvent. This study investigates its corrosion behavior using a natural convection microloop coupled with in-situ thin layer activation. A thin section of tubing was irradiated with a 16 MeV proton beam to generate ⁵¹Cr, ⁵²Mn, and ⁹⁶Tc isotopes, which was welded to the hot-leg portion of the microloop, enabling real-time tracking. The activity of the radioactive isotopes was monitored using HPGe gamma-ray detectors to study alloy dissolution at the hot-leg, deposition of corrosion products at the cold-leg, and mass transport phenomena within the natural convection Inconel-625 microloop. After corrosion testing, the microloop sections were analyzed using advanced microscopy to examine the alloy microstructure, corrosion products, and elemental dissolution. The results provide critical insights into the corrosion behavior of Inconel-625 in flowing molten chloride salt. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Temperature Materials, Copper / Nickel / Cobalt |