Models of hydrolytic weakening in quartz
- 1 May 1986
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 53 (5) , L65-L70
- https://doi.org/10.1080/01418618608242857
Abstract
Three models of the weakening of quartz by small amounts of water are described and analysed. Attention is confined to the glide of dislocations caused by a double-kink nucleation process. The structure of a double kink on a basal 60° dislocation is described and its formation energy estimated using a short-range interaction potential. The same potential was used to give a lower bound to its migration energy. The energies of Griggs-Black-Frank and (4H)si models of water bound to kinks are also calculated. The results strongly support these models of hydrolytic weakening.Keywords
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