Predicted Changes to Alkali Concentration Adjacent to Glass–Crystal Interfaces
Atomic scale molecular dynamics simulation is used to investigate how alkali concentrations in glass adjacent to interfaces with crystal surfaces, might differ from those within the interior of a bulk glass. A sodium, lithium alkali-borosilicate glass and its interfaces with the (1 0 0) and (1 1 0) surfaces of MgO, CaO, and SrO are considered. These six interfaces were formed by melt-quenching the glass in the presence of the crystal surface, providing glass alkali ions with the opportunity to either migrate towards or away from the crystal surface. The resulting alkali contents adjacent to the interface are found to differ depending on crystal composition and surface orientation.
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Document Type: Research Article
Affiliations: 1: Department of Materials, Imperial College London, London SW7 2AZ, UK 2: Nexia Solutions Ltd, Warrington, Cheshire WA3 6AS, UK
Publication date: May 1, 2008