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Surface Layer Crystallization of Simulated Waste Glass at Elevated Temperatures

Published online by Cambridge University Press:  25 February 2011

Tadashi Inoue ,
Hayaichi Yokoyama ,
Takeo Onchi  and
Hiroaki Kōyama
Tadashi Inoue
Affiliation:
Central Research Institute of Electric Power Industry, 11-1, Iwato Kita 2 Chome, Komae-Shi, Tokyo 201 Japan
Hayaichi Yokoyama
Affiliation:
Central Research Institute of Electric Power Industry, 11-1, Iwato Kita 2 Chome, Komae-Shi, Tokyo 201 Japan
Takeo Onchi
Affiliation:
Central Research Institute of Electric Power Industry, 11-1, Iwato Kita 2 Chome, Komae-Shi, Tokyo 201 Japan
Hiroaki Kōyama
Affiliation:
Central Research Institute of Electric Power Industry, 11-1, Iwato Kita 2 Chome, Komae-Shi, Tokyo 201 Japan
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 26: Symposium D – Scientific Basis for Nuclear Waste Management VII , 1983 , 535
Copyright
Copyright © Materials Research Society 1984

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References

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