| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC) Status and New Assessment of MF-UF4 (M = Li, Na, K, Cs) Systems |
| Author(s) |
Johnathon Ard, Juliano Schorne-Pinto, Jacob Yingling, Theodore Besmann, Jake McMurray |
| On-Site Speaker (Planned) |
Johnathon Ard |
| Abstract Scope |
The Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC) is a freely licensed resource supporting thermodynamic modeling of MSR-relevant fluoride and chloride salt systems. It continues to be expanded with additional components and higher order systems by the University of South Carolina in coordination with Oak Ridge National Laboratory. The current status of the MSTDB-TC is discussed, including newly added and assessed systems. The MF-UF4 (M = Li, Na, K) systems have been previously modeled using the modified quasi-chemical model in the quadruplet approximation. However, these models failed to obtain a reliable representation of the liquid phase when interpolated to higher order systems. It was necessary to introduce multiple endmembers for UF4 to accommodate observed variations in coordination numbers in the melt. A new model was therefore developed for the MF-UF4 (M = Li, Na, K) systems, and to these has been added the newly assessed CsF-UF4 system. |
| Proceedings Inclusion? |
Undecided |