About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Optimization of Phase Equilibria and Thermodynamics for Actinide Chloride Systems Relevant for Molten Salt Reactors |
Author(s) |
Juliano Schorne Pinto, Jacob Yingling, Johnathon Ard, Theodore Besmann |
On-Site Speaker (Planned) |
Juliano Schorne Pinto |
Abstract Scope |
A crucial issue for the development of molten salt reactors (MSRs) is the lack of thermodynamic information for its main constituents, i.e., fuel and/or coolant. For example, enthalpies of liquid-liquid mixing for uranium and plutonium trichloride with alkali metal chloride systems are limited. However, they are important to reliably model thermodynamic properties required for calculating the state of complex systems present in MSRs. The work reported here supports the development of thermodynamic functions through empirical correlations coupled with numerical modeling to predict the enthalpy of mixing for unexplored AkCl-UCl3 and AkCl-PuCl3 (Ak=alkali element) systems. Additionally, we assessed the historical phase equilibria data and thermochemical values together with original differential scanning calorimetry measurements. The results provide a consistent, reliable set of values that have been integrated into the Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC), an open-source compendium for MSR applications. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Computational Materials Science & Engineering, |