Thermal expansion and steam oxidation of uranium mononitride analysed via in situ neutron diffraction

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dc.contributor.authorLiu, Jen_AU
dc.contributor.authorGasparrini, Cen_AU
dc.contributor.authorWhite, JTen_AU
dc.contributor.authorJohnson, KDen_AU
dc.contributor.authorLopes, DAen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorGriffiths, GJen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorWenman, MRen_AU
dc.contributor.authorBurr, PAen_AU
dc.contributor.authorSooby, ESen_AU
dc.contributor.authorObbard, EGen_AU
dc.date.accessioned2024-01-18T01:08:57Zen_AU
dc.date.available2024-01-18T01:08:57Zen_AU
dc.date.issued2023-03en_AU
dc.date.statistics2023-01-13en_AU
dc.descriptionThe authors acknowledge contributions made by Chris Baldwin, Dr. Deborah Wakeham and Dr Daniel J. Gregg in the planning and execution of experiments; funding for beamtime proposals P6904 and P8186 at the Australian Centre for Neutron Scattering; CG and MRW: EPSRC funding under grant no. EP/P005101/1; CG: UNSW Sydney Women in Engineering Travel Award; EGO and PAB: funding from ANSTO and the Sir William Tyree Foundation.en_AU
dc.description.abstractIn situ neutron powder diffraction experiments are applied to physical, kinetic, and microstructural characterization of uranium mononitride as a promising light water reactor fuel material. The temperature-variable coefficient of thermal expansion and isotropic Debye Waller factors are obtained by sequential Rietveld refinement over 499–1873 K. Oxidation of a UN pellet (95.2% density) under flow of 11 mg/min D2O is observed to initiate above 623 K and the rate increases by a factor of approximately 10 from 673 to 773 K, with activation energy 50.6 ± 1.3 kJ/mol; uranium oxide is the only solid corrosion product. Crown Copyright © 2022 Published by Elsevier B.V.en_AU
dc.identifier.articlenumber154215en_AU
dc.identifier.citationLiu, J., Gasparrini, C., White, J. T., Johnson, K., Lopes, D. A., Peterson, V. K., Studer, A., Griffiths, G. J., Lumpkin, G. R., Wenman, M. R., Burr, P. A., Sooby, E. S., & Obbard, E. G. (2023). Thermal expansion and steam oxidation of uranium mononitride analysed via in situ neutron diffraction. Journal of Nuclear Materials, 575, 154215. doi:10.1016/j.jnucmat.2022.154215en_AU
dc.identifier.issn0022-3115en_AU
dc.identifier.journaltitleJournal of Nuclear Materialsen_AU
dc.identifier.urihttps://doi.org/10.1016/j.jnucmat.2022.154215en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15360en_AU
dc.identifier.volume575en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.relation.urihttps://doi.org/10.1016/j.jnucmat.2022.154215en_AU
dc.subjectThermal expansionen_AU
dc.subjectSteamen_AU
dc.subjectOxidationen_AU
dc.subjectUraniumen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectWater cooled reactorsen_AU
dc.subjectNuclear fuelsen_AU
dc.titleThermal expansion and steam oxidation of uranium mononitride analysed via in situ neutron diffractionen_AU
dc.typeJournal Articleen_AU
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