|About this Abstract
||MS&T22: Materials Science & Technology
||Thermodynamics of Materials in Extreme Environments
||Thermophysical Properties of Key Binary Salt Systems using High-Sensitivity Twin Calvet Drop Calorimetry for Next Generation Molten Salt Reactors
||Kyle Makovsky, Vitaliy Goncharov, Jordan Barr, Xiaofeng Guo, Scott Beckman, Richard Clark, Bruce McNamara, Charmayne Lonergan, Jason Lonergan
|On-Site Speaker (Planned)
Molten salt reactors (MSRs) are increasing in interest due to their high operating temperatures and dearth of limitations often associated with conventional solid fuels and coolants. However, there is a gap in fundamental understanding of key thermophysical properties for some proposed salt systems. In this study, calorimetric data including melting point (Mp), enthalpy (ΔH), and heat capacity (Cp) were collected using a high-sensitivity drop calorimeter from 25 to 1000 °C. Custom Ni-crucibles for these experiments were designed and fabricated in-house. Enthalpies were determined for the binary system MgCl2-NaCl using a suite of compositions ranging between the two end-member compositions, including the eutectic composition of 58% Na:42% Mg. Preliminary data thus far demonstrates the enthalpies of the liquid phase decreased (~8%) over the investigated temperature range. Future work is planned for the binary LiF-ThF4 system and the ternary MgCl2-NaCl-UCl3 system.