| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Impact of Iodide Species on Crystal Structure and Thermodynamic Properties of LiCl-KCl Eutectic Salt |
| Author(s) |
Maria Del Rocio Rodriguez Laguna, Gregory Peter Holmbeck, Mehmet Topsakal , Simerjeet Gill, Ruchi Gakhar |
| On-Site Speaker (Planned) |
Maria Del Rocio Rodriguez Laguna |
| Abstract Scope |
Molten salt reactors (MSRs) are designed to operate with the fuel, and ultimately the fission products, dissolved in the molten salt. Studies on fission product behavior in molten salts are scarce. Iodine is a high-yield fission product accounting for 1-4 % of the total uranium-235 fission products. At INL, we are investigating the chemical speciation of iodine in molten salt systems and the impact of these species on the physico-chemical properties of the base system. We have studied the effect of alkali metal iodides on the thermodynamic properties of LiCl-KCl eutectic by differential scanning calorimetry, high-temperature X-ray diffraction and thermodynamic calculations. The presence of iodide significantly changes the solidus and liquidus temperatures compared to the melting temperature of LiCl-KCl eutectic. Moreover, it notably influences the evolution of the crystalline structure as temperature varies. This knowledge is crucial for MSR design and operation, safe handling, and effective processing of spent nuclear fuel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Phase Transformations, High-Temperature Materials |