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Lubrication of dislocation glide in MgO by hydrous defects

Skelton, Richard; Walker, Andrew M


Water-related defects, principally in the form of protonated cation vacancies, are potentially able to weaken minerals under high-stress or low-temperature conditions by reducing the Peierls stress required to initiate dislocation glide. In this study, we use the Peierls–Nabarro (PN) model to determine the effect of protonated Mg vacancies on the 1/2<110>{110} and 1/2<110>{100} slip systems in MgO. This PN model is parameterized using generalized stacking fault energies calculated using...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Physics and Chemistry of Minerals
DOI: 10.1007/s00269-018-0957-y


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