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On the stoichiometry of zirconium carbide

hal.structure.identifierImperial College London
dc.contributor.authorGASPARRINI, Claudia
hal.structure.identifierDepartment of Earth Sciences [University of Cambridge]
dc.contributor.authorRANA, Dhan-Sham
hal.structure.identifierImperial College London
dc.contributor.authorLE BRUN, Niccolò
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorHORLAIT, Denis
hal.structure.identifierImperial College London
dc.contributor.authorMARKIDES, Christos
hal.structure.identifierDepartment of Earth Sciences [University of Cambridge]
dc.contributor.authorFARNAN, Ian
hal.structure.identifierImperial College London
hal.structure.identifierNuclear Futures Institute, Bangor University, Bangor
dc.contributor.authorLEE, William
dc.date.issued2020-12
dc.identifier.issn2045-2322
dc.description.abstractEnthe dependencies of the enhanced thermomechanical properties of zirconium carbide (Zrc x) with sample purity and stoichiometry are still not understood due to discrepancies in the literature. Multiple researchers have recently reported a linear relation between the carbon to zirconium atomic ratio (c/Zr) and the lattice parameter, in contrast with a more established relationship that suggests that the lattice parameter value attains a maximum value at a C/Zr ~ 0.83. In this study, the relationship between C/Zr atomic ratio and the lattice parameter is critically assessed: it is found that recent studies reporting the thermophysical properties of Zrc x have unintentionally produced and characterised samples containing zirconium oxycarbide. to avoid such erroneous characterization of Zrc x thermophysical properties in the future, we propose a method for the accurate measurement of the stoichiometry of ZrC x using three independent experimental techniques, namely: elemental analysis, thermogravimetric analysis and nuclear magnetic resonance spectroscopy. Although a large scatter in the results (Δc/Zr = 0.07) from these different techniques was found when used independently, when combining the techniques together consistent values of x in Zrc x were obtained.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enOn the stoichiometry of zirconium carbide
dc.typeArticle de revue
dc.identifier.doi10.1038/s41598-020-63037-0
dc.subject.halChimie/Chimie inorganique
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie analytique
bordeaux.journalScientific Reports
bordeaux.page6347
bordeaux.volume10
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03033218
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03033218v1
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