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Surface Layer Crystallization of Simulated Waste Glass at Elevated Temperatures
Published online by Cambridge University Press: 25 February 2011
Abstract
Surface crystallization was investigated for alkali borosilicate glass containing simulated waste of 26.4 wt% in the temperature range of 550 to 800°C. The crystals deposited on the surface layer of glasses were mainly composed of molybdates and molybdenum oxide. The saturated crystalline fraction of eash deposit, except for KMOO4, was maximum at 800°C in the temperature range investigated, and decreasing with decreasing temperature. The fractional change of crystallization was evaluated with the JMA equation. The activation energy of surface crystallization was estimated to be in the range of 50 to 70 kcal/mol for most of molybdates.
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