About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Transmutation Effects in Materials in Fission, Fusion, and Spallation Environments
|
| Presentation Title |
The Relationship Among Stoichiometry, Microstructural Evolution and Tritium Release in Ternary Lithium Ceramics |
| Author(s) |
David James Senor, Andrew M Casella, Weilin Jiang |
| On-Site Speaker (Planned) |
David James Senor |
| Abstract Scope |
In solid breeders, previous studies and the present work noted a correlation between stoichiometry and tritium retention/release in Li ternary oxides. For the past 12 years, a comprehensive experimental and computational research program to improve fundamental scientific understanding of LiAlO2 and LiAl5O8 irradiation performance for tritium production in light water reactors has been pursued. A similar effort has been underway for about seven years to study irradiation performance of Li4SiO4, Li2SiO3, Li5AlO4, Li8ZrO6 and other octalithium ternary oxides for fusion solid breeders. The presentation will summarize results that provide insight into the relationship among stoichiometry, microstructural evolution and tritium retention/release for all these compounds. Methods for building this understanding include ion and fission neutron irradiation, and post-irradiation microstructural characterization using electron microscopy, x-ray diffraction, atom probe tomography, and secondary ion mass spectrometry. Atomistic modeling using density functional theory and molecular dynamics provides insight to help interpret the experimental results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Ceramics, Environmental Effects |