| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramic Materials for Nuclear Energy Research and Applications
|
| Presentation Title |
TEM Characterization of Dislocation Loops in Ion-irradiated Single Crystal ThO2 |
| Author(s) |
Kaustubh K. Bawane, Xiang Liu, Tiankai Yao, Marat Khafizov, Aaron French, Matthew Mann, Lin Shao, Jian Gan, David Hurley, Lingfeng He |
| On-Site Speaker (Planned) |
Kaustubh K. Bawane |
| Abstract Scope |
This work focuses on the full characterization of dislocation loops in single-crystal ThO2 irradiated with proton and Kr ions at various temperatures and energies. Transmission electron microscopy (TEM) characterization was performed on a large number of dislocation loops. Burgers vector director analyzed using standard g.b=0 invisibility criterion showed <111> and <110> type loops for Kr irradiation and <111> type loops for proton irradiation. Loop density and loop growth behavior were discussed based on kinetic rate theory. TEM analysis of edge-on dislocation loops were used to determine habit planes for <111> type loops as {111} type. The nature of dislocation loops was revealed using the inside-outside contrast method as interstitial type. The interstitial loop of 1/3<111>{111} has also been confirmed using rel-rod dark field imaging and atomic-resolution scanning transmission electron microscopy imaging techniques. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Ceramics, Nuclear Materials |