| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-31: Formation and Fractionation of Solid Solution REE-F Compounds |
| Author(s) |
Olivia G. Bahhage, Natalie Yaw, Malin C Dixon Wilkins, John McCloy, Xiaofeng Guo |
| On-Site Speaker (Planned) |
Olivia G. Bahhage |
| Abstract Scope |
Studying how rare earth element (REE) compounds behave in extreme environments is a crucial step towards understanding nuclear materials at all steps of the nuclear fuel cycle, but especially raw materials and nuclear waste. Through understanding the formation processes under varying conditions we allow for economical exploit. In this project, we studied the formation of solid-solution REE-F compounds by synthesizing fluocerite (chemical formula REEF3) using a hydrothermal synthesis mimicking geological conditions. Using conventional techniques, we have probed the fractionation of REE between the solution and solid phase, revealed interesting kinetics of formation, and observed morphological alteration of these materials over time. Advanced spectroscopy (EXAFS) was also collected on these samples to study clustering, defects, and short-range ordering in the solid solutions . These findings will inform our understanding of how important lanthanide-actinide mineral deposits form, shed light on the important REE-F system, and provide high-quality phase-pure samples for further study. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Nuclear Materials, High-Entropy Alloys, Ceramics |