Surface tensile layer generation during thermal annealing of phosphate glass

Surface tensile layers (up to 20 MPa) are generated during thermal annealing of metaphosphate glass in ambient air. The surface tensile stress is caused by changes in properties of the phosphate glass, particularly the glass transition temperature and the coefficient of thermal expansion, due to the...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2000-03, Vol.263, p.228-239
Main Authors: Hayden, J.S, Marker III, A.J, Suratwala, T.I, Campbell, J.H
Format: Article
Language:English
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Summary:Surface tensile layers (up to 20 MPa) are generated during thermal annealing of metaphosphate glass in ambient air. The surface tensile stress is caused by changes in properties of the phosphate glass, particularly the glass transition temperature and the coefficient of thermal expansion, due to the glass reaction with water vapor and diffusion of OH groups into the region just below the surface (
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(99)00672-9