ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/7657

Title: Hydrogen induced vacancy formation in tungsten
Authors: Middleburgh, SC
Voskoboinikov, RE
Guenette, MC
Riley, DP
Keywords: VACANCIES
THERMONUCLEAR REACTORS
SOLUTES
THERMONUCLEAR REACTORS
ENERGY
REACTORS
Issue Date: May-2014
Publisher: Elsevier
Citation: Middleburgh, 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: http://dx.doi.org/10.1016/j.jnucmat.2014.02.014
Abstract: Atomic 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.
URI: http://dx.doi.org/10.1016/j.jnucmat.2014.02.014
http://apo.ansto.gov.au/dspace/handle/10238/7657
ISSN: 0022-3115
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback