| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Diffusion Based Phase Equilibria Investigation of the Uranium-Technetium System |
| Author(s) |
Josephine Libero-Cruzado, Frederic Poineau, Daniel Koury |
| On-Site Speaker (Planned) |
Josephine Libero-Cruzado |
| Abstract Scope |
As part of a study to determine the phase diagram of the uranium technetium system several diffusion couples have been prepared. The diffusion couples are sealed into argon-filled nipple assemblies and then annealed at temperatures ranging from 700°C to 850°C. They were prepared for analysis using standard metallographic practices. Cross sections were analyzed using scanning electron microscopy (SEM) equipped with energy dispersive x-ray spectroscopy (EDS) and electron backscatter diffraction (EBSD). In addition to the SEM several of the couples were also investigated using an electron probe micro-analyzer (EPMA). X-ray spectroscopy in the SEM/EPMA was used to take concentration profiles across the diffusion zone to identify intermetallic phases and calculate diffusion coefficients and activation energies. EBSD was used to investigate microstructural features in the interaction zone. . The results of this study provide crucial information for the determination of phase equilibria of the uranium technetium binary system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Phase Transformations, Characterization |