| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Spectroscopic Methods and Analysis for Nuclear Energy Related Materials
|
| Presentation Title |
The use of spatially resolved EELS spectroscopy to elucidate irradiation induced phase transformation in Fe2O3 and Cr2O3 irradiated with ions and its impact on irradiation induced-loop formation |
| Author(s) |
Djamel Kaoumi, Angelica Lopez Morales, Yujun Xie, Christopher Winkler, Benjamin Derby, Tiffany Kaspar, Daniel Schreiber, Peter Hosemann |
| On-Site Speaker (Planned) |
Djamel Kaoumi |
| Abstract Scope |
Oxide scales are typically formed on top of steels when exposed to extreme condition of irradiations and corrosion such as in a nuclear reactor environment. Understanding how irradiation affect the different oxide phases is critical to understand how they build in-reactor and how irradiation impacts the passivating nature of these oxides. In this work, we explore the irradiation effects in Fe/Cr2O3/Fe2O3/Al2O3 multilayer samples through in-situ ion irradiation in a TEM using 1 MeV Kr ions at room temperature and 300 ֯C followed by spatially resolved EELS spectroscopy and TEM. The formation of irradiation-induced defects and their evolution is followed as a function of dose and temperature. Dislocation loops are observed to form in both Cr2O3 and Fe2O3 but their formation and growth followed different kinetics despite the similar initial crystal structure and thickness. Spatially resolved EELS spectroscopy was instrumental in elucidating the reasons for such drastic different behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Nuclear Materials |