| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
In-Situ Analysis of Electron Beam Irradiation on Amorphous Nanostructured Ceramic Materials |
| Author(s) |
Nathaniel Keninger, Sooyeon Hwang, Md Ali Muntaha, Tristan Olsen, Cyrus Koroni, Sarah Pooley, Claire Xiong, Janelle P Wharry |
| On-Site Speaker (Planned) |
Nathaniel Keninger |
| Abstract Scope |
The aim of this study is to understand electron irradiation induced amorphous-to-crystalline (a-to-c) athermal phase transitions in nanostructured ceramics. The degree of crystallinity has significant impact on the properties of nanostructured ceramics, so harnessing a-to-c transitions could open pathways to produce new bespoke materials through targeted irradiation treatments. However, the exact mechanisms behind these phase transitions are not yet well understood, and the impact of composition has not yet been studied. Herein, in-situ electron irradiation experiments were performed covering a range of materials: nanoporous Al2O3, nanoporous Nb2O5, TiO2 nanotubes, ZrO2 nanotubes, and Ta2O5 nanotubes. TEM images were periodically captured over the course of each irradiation treatment and analyzed for a-to-c phase transitions through number densities, area fractions, and sizes of developed crystalline regions. Each material in the study showed visible crystallization behavior, with TiO2 and ZrO2 samples experiencing the strongest effects, and the Ta2O5 and Nb2O5 samples experiencing the weakest. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Ceramics, Phase Transformations |