Hydrogen induced vacancy formation in tungsten

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dc.contributor.authorMiddleburgh, SCen_AU
dc.contributor.authorVoskoboinikov, REen_AU
dc.contributor.authorGuenette, MCen_AU
dc.contributor.authorRiley, DPen_AU
dc.date.accessioned2016-10-06T00:23:17Zen_AU
dc.date.available2016-10-06T00:23:17Zen_AU
dc.date.issued2014-05en_AU
dc.date.statistics2016-10-06en_AU
dc.description.abstractAtomic scale modelling methods have been used to study the change in vacancy population when H is introduced into the W bulk matrix. Vacancy defects are predicted to dominate in pure W, and the vacancy concentration is expected to be very small. A mechanism whereby H solutes facilitate vacancy formation has been outlined and a single H interstitial is predicted to reduce the vacancy formation energy from 2.95 eV to 2.23 eV. Clustering of H interstitials in W is predicted to be unfavourable without a W vacancy. H has also been shown to affect the vacancy binding characteristics in W, changing the behaviour from a repelling interaction in pure W, retarding the formation of small vacancy clusters, to an attractive interaction when vacancy-H clusters are considered. The changes in defect behaviour predicted, will have observable implications to operational properties and the application of W in fusion reactor components. © 2014, Elsevier B.V.en_AU
dc.identifier.citationMiddleburgh, S. C., Voskoboinikov, R. E., Guenette, M. C., & Riley, D. P. (2014). Hydrogen induced vacancy formation in tungsten. Journal of Nuclear Materials, 448(1–3), 270-275. doi:10.1016/j.jnucmat.2014.02.014en_AU
dc.identifier.govdoc7225en_AU
dc.identifier.issn0022-3115en_AU
dc.identifier.issue1-3en_AU
dc.identifier.journaltitleJournal of Nuclear Materialsen_AU
dc.identifier.pagination270-275en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jnucmat.2014.02.014en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7657en_AU
dc.identifier.volume448en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectVacanciesen_AU
dc.subjectThermonuclear reactionsen_AU
dc.subjectSolutesen_AU
dc.subjectEnergyen_AU
dc.subjectReactorsen_AU
dc.titleHydrogen induced vacancy formation in tungstenen_AU
dc.typeJournal Articleen_AU
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