| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Methods, Techniques, and Materials Discovery of Irradiation Effect Using In-situ Microscopy
|
| Presentation Title |
Is a TEM Foil “Bulk Enough” to Study the Parabolic Air-ingress Oxidation of W PFM in In-situ Environmental TEM? |
| Author(s) |
Bharath Krupa Teja Mekala, Rajat Sainju, Lichun Zhang, Yuanyuan Zhu |
| On-Site Speaker (Planned) |
Yuanyuan Zhu |
| Abstract Scope |
Pre-existing radiation-induced defects and surface reconstructions in the base tungsten armour could strongly influence the divertor’s response to the thermal oxidation in cases of air ingress accidents. However, oxidation data on irradiated tungsten are limited. While ion beam irradiation can serve as a good proxy for neutron damage, limited damage depth in tungsten poses a problem for the conventional Thermogravimetric Analysis (TGA) oxidation test. In this work, we combine the novel in-situ environmental TEM (ETEM) with ex-situ TGA and step-wise SEM/TEM characterizations, and develop a new oxidation kinetic test capability to facilitate the use of ion irradiated metals with limited damage depth to study radiation impact on oxidation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Phase Transformations |