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Direct observations of Pd–Te compound formation within noble metal inclusions in spent nuclear fuel

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Show simple item record Kessler, Sean H. Lach, Timothy G. Garrett, Kerry E. Conroy, Michele A. Abrecht, David G. Schwantes, Jon M. Clark, Richard A. 2020-08-31T07:52:40Z 2020-08-31T07:52:40Z 2020
dc.description peer-reviewed en_US
dc.description.abstract Although the existence of a five-metal (Mo-Tc-Ru-Rh-Pd) phase – as nanoparticles observed in irradiated nuclear fuel – has been known for more than half a century, the chemical and physical mechanisms controlling the formation and behavior of such particles remain stubbornly elusive. We present in this work new evidence for the presence of a separate nonmetallic phase associated with the metallic particles and containing a significant fraction of Te in addition to Pd. While this new phase potentially complicates the thermodynamic picture of a mixed alloy in equilibrium with the surrounding fuel environment, it also provides new clues in the search for a chemical mechanism for Pd migration through the uranium dioxide matrix and the nucleation behavior of the particles. Fractionation between phases may subsequently affect the mechanical performance of fuels during irradiation and their interactions with the surrounding environment during long-term waste storage. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Journal of Nuclear Materials;538, 152249
dc.subject Transition metal alloys en_US
dc.subject compounds Noble metal en_US
dc.title Direct observations of Pd–Te compound formation within noble metal inclusions in spent nuclear fuel en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.jnucmat.2020.152249
dc.contributor.sponsor Pacific Northwest National Laboratory en_US
dc.contributor.sponsor Nuclear Process Science Initiative en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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