| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
Orientation-Dependent Oxidation of Fusion Plasma-Facing Tungsten |
| Author(s) |
Rajat Sainju, Manisha De Alwis Goonatilleke, Yuanyuan Zhu |
| On-Site Speaker (Planned) |
Yuanyuan Zhu |
| Abstract Scope |
Developing high-temperature structural materials with enhanced thermal oxidation resistance in response to extreme environments remains a significant challenge. While high oxidation resistance is inherent at specific surface crystallographic orientations in many metals and alloy systems, such as refractory tungsten (W) – the primary candidate for ITER plasma-facing divertor material – the mechanisms by which certain surface orientations of metals promote slow oxidation remain unclear. This talk will present our recent efforts in combining in-situ environmental TEM (ETEM) oxidation and ex-situ Thermogravimetric Analysis (TGA) with step-wise SEM/TEM characterizations to investigate the underlying mechanisms of orientation-dependent oxidation kinetics of W. We will also discuss how the nature of the passivating W oxide layer influences the parabolic oxidation rate-controlling process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Nuclear Materials, Characterization |