About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Special Topics in Nuclear Materials: Reproducibility and Uncertainty; Hydrogen Effects; Space and Microreactor Systems
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| Presentation Title |
Effect of Sulfide Corrosion on the Interatomic Spacing of Copper Measured by Synchrotron HEXRD |
| Author(s) |
Benjamin Hackett, Kevin Daub, Jason Giallonardo, Mehran Behazin, Nicholas Senior, Mark Daymond, Suraj Persaud |
| On-Site Speaker (Planned) |
Benjamin Hackett |
| Abstract Scope |
To isolate used nuclear fuel, the internationally accepted solution utilises copper-coated steel used fuel containers (UFCs) as the primary engineered barrier to contain and isolate CANDU fuel bundles from the environment at least 500 m underground. While copper is resistant to corrosion in anoxic pure water environments, sulfide is an oxidant that may be transported to the container surface and is under investigation as a potential corrosion mechanism during the UFCs’ lifetime. Existing research in this field focused on the characterization of the corrosion products to confirm that the copper sulfide film will remain non-passivating under simulated deep geological repository conditions. However, during the sulfidation of the copper, there have been controversial reports of the ingress of hydrogen and sulfur into the copper lattice. This study explores corrosion of copper in sulfide-containing environments specifically evaluating whether parameters exist that cause lattice expansion (and diffusion) as observed by HEXRD. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Sustainability, |