| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments II
|
| Presentation Title |
Behavior of Tritium Breeder Ceramics under Ion Irradiation |
| Author(s) |
Weilin Jiang, Libor Kovarik, Mark G. Wirth, Zihua Zhu, Yeong-Shyung Chou, Satoru Kikuchi, Kazuya Sasaki, Zhihan Hu, Lin Shao, Andrew M. Casella, David J. Senor |
| On-Site Speaker (Planned) |
Weilin Jiang |
| Abstract Scope |
The performance of tritium breeder materials is critical to fusion power economy. As the facility for fusion neutron irradiation is currently unavailable, this work employs energetic ion beams to emulate fusion environments for study of lithium ceramic materials with low to high Li/O ratios. Compared to Li-poor ceramics, Li-rich ones have an intrinsic property for both increasing tritium production rates and providing fast tritium diffusion paths, and are thus outstanding candidates for fusion blanket applications. A dramatic change in the microstructure has been observed, including second-phase precipitation, platelet formation and full amorphization. Significant Li loss also occurs. Our data suggest that surface coating with nickel can effectively prevent Li loss while allowing for a rapid deuterium (and tritium by inference) release. This presentation will provide a behavior comparison of lithium ceramic pellets under ion irradiation at elevated temperatures, including microstructural and compositional evolutions as a function of dose and temperature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Ceramics, Characterization |