| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
Thermodynamic Database Development with a Focus on Corrosion in Potential Nuclear Reactor Molten Salt Systems |
| Author(s) |
Theodore Besmann, Juliano Schorne-Pinto, Jacob Yingling, Johnathan Ard, Mina Aziziha, Amir Mofrad |
| On-Site Speaker (Planned) |
Theodore Besmann |
| Abstract Scope |
The continuing effort to expand the successful Molten Salt Thermal Properties Database – Thermochemical, has driven efforts to improve the accuracy of database values and the efficiency of required assessments. Fundamental studies of salts have made it clear that they experience short-range ordering, and the effect on the resulting coordination numbers on salt thermodynamic properties is captured in the current modified quasi-chemical model in the quadruplet approximation. The accuracy of these models is being improved through the use of multiple system endmembers, better capturing phenomenological behavior with varying temperature and composition. Optimization of systems using experimental and computational information to fit model parameters in such complex systems is problematic, and thus methodologies to more efficiently effect the fits have been developed. These approaches have been used to develop system models of consequence to corrosion in MSRs and will be described along with the current state of the database. |