Structural and phase evolution in U3Si2 during steam corrosion

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dc.contributor.authorLiu, Jen_AU
dc.contributor.authorBurr, PAen_AU
dc.contributor.authorWhite, JTen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorDayal, Pen_AU
dc.contributor.authorBaldwin, Cen_AU
dc.contributor.authorWakeham, Den_AU
dc.contributor.authorGregg, DJen_AU
dc.contributor.authorSooby, ESen_AU
dc.contributor.authorObbard, EGen_AU
dc.date.accessioned2025-01-12T23:56:45Zen_AU
dc.date.available2025-01-12T23:56:45Zen_AU
dc.date.issued2022-08-01en_AU
dc.date.statistics2024-10-23en_AU
dc.description.abstractU3Si2 nuclear fuel is corroded in deuterated steam with in situ neutron diffraction. Density functional theory is coupled with rigorous thermodynamic description of the hydride including gas/solid entropy contributions. H absorbs in the 2b interstitial site of U3Si2Hx and moves to 8j for x ≥ 0.5. Hydriding forces lattice expansion and change in a/c ratio linked to site preference. Rietveld refinement tracks the corrosion reactions at 350–500 °C and preference for the 8j site. Above 375 °C, formation of UO2, U3Si5 and USi3 take place in the grain boundaries and bulk. Hydriding occurs in bulk and precedes other reactions. © 2022 Published by Elsevier Ltd.en_AU
dc.description.sponsorshipThis research was undertaken with the assistance of resources and services from the National Computational Infrastructure, which is supported by the Australian Government; through the UNSW-NCI partner trial scheme; the Multi-modal Australian ScienceS Imaging and Visualisation Environment (MASSIVE); the Pawsey Supercomputing Centre, which is supported by the Australian Government and the Government of Western Australia; and was enabled by Intersect Australia Limited. The authors are grateful for beamtime allocated at the Australian Centre for neutron scattering under proposal P8186, and thank Grant Griffiths, John Macleod and Richard Collins for assistance with sample handling.en_AU
dc.identifier.articlenumber110373en_AU
dc.identifier.citationLiu, J., Burr, P. A., White, J. T., Peterson, V. K., Dayal, P., Baldwin, C., Wakeham, D., Gregg, D. J., Sooby, E. S., & Obbard, E. G. (2022). Structural and phase evolution in U3Si2 during steam corrosion. Corrosion Science, 204, 110373. doi:10.1016/j.corsci.2022.110373en_AU
dc.identifier.issn0010-938Xen_AU
dc.identifier.journaltitleCorrosion Scienceen_AU
dc.identifier.urihttps://doi.org/10.1016/j.corsci.2022.110373en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15917en_AU
dc.identifier.volume204en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectUraniumen_AU
dc.subjectSiliconen_AU
dc.subjectSteamen_AU
dc.subjectCorrosionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectThermodynamicsen_AU
dc.subjectHydridesen_AU
dc.subjectGasesen_AU
dc.subjectSolidsen_AU
dc.subjectIntermetallic compoundsen_AU
dc.subjectStrain rateen_AU
dc.subjectAbsorptionen_AU
dc.subjectOxidationen_AU
dc.subjectReactorsen_AU
dc.subjectFukushima Daiichi Nuclear Power Stationen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectNuclear fuelsen_AU
dc.titleStructural and phase evolution in U3Si2 during steam corrosionen_AU
dc.typeJournal Articleen_AU
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