About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Synergistic Irradiation, Corrosion, and Microstructural Evolution in Nuclear Materials
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Presentation Title |
N-38: Development of Coatings to Provide Corrosion Resistance and Tritium Retention for Application in Nuclear Fusion Reactors |
Author(s) |
Hazel Gardner, Alice Laferrere, Callum Gallagher , David Bowden |
On-Site Speaker (Planned) |
Hazel Gardner |
Abstract Scope |
Nuclear fusion can supply abundant, low carbon energy with minimal long-term radioactive waste, making it a safe and sustainable future energy option. In a fusion powerplant, one way to prevent tritium fuel from diffusing throughout the structure is to coat structural materials with a tritium permeation barrier. These coatings must also provide corrosion resistance against coolants and be resistant to irradiation damage. This work outlines a materials development strategy for multifunctional coatings for fusion applications. Ceramic oxide and nitride coatings on Grade 91 steel substrates have been tested for thermal stability. Coating adhesion has been investigated through mechanical testing and microstructural characterisation of the coating-substrate interface. Ion irradiation studies demonstrate coating response to irradiation damage and retention of hydrogen isotopes is compared between different coating systems. Workflow for future corrosion testing in liquid metals and molten salts is presented alongside capabilities for developing multi-layer coatings tailored to different corrosive environments. |
Proceedings Inclusion? |
Planned: |