About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Stability and Thermodynamic Properties of Intermediate Phases in the NaCl-MgCl2 System |
| Author(s) |
Aiswarya Padinhare Manissery, Juliano Schorne-Pinto, Pandu Wisesa, Jinyunping Zhou, Hunter B. Tisdale, Ronald Booth, Jack Wilson, Jorge Paz Soldan Palma, Hans-Conrad zur Loye, Theodore M Besmann |
| On-Site Speaker (Planned) |
Aiswarya Padinhare Manissery |
| Abstract Scope |
The NaCl-MgCl2 eutectic salt is receiving growing interest as a candidate for coolant and fuel solvent in molten chloride reactors due to its advantageous physico-chemical properties. Despite the extensive experimental and computational studies conducted to date, significant knowledge gaps remain regarding the thermodynamic properties of intermediate phases, their stability, and invariant reaction coordinates. To address this issue, four intermediate phases present in the system were synthesized, with purity determined by room-temperature X-ray diffraction and inert gas fusion for oxygen and hydrogen content. High-temperature X-ray diffraction coupled with differential scanning calorimetry was used to determine stability and decomposition temperatures. Similar methods were used to determine phase equilibria in the overall system, and measurements of the heat capacity of the synthesized phases were performed in temperature regions of greater uncertainty. The result is an improved set of consistent thermodynamic models for inclusion in the Molten Salt Thermal Properties Database – Thermochemical (MSTDB-TC). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Modeling and Simulation, Characterization |