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Microwave processing CaO-Al203-SiO2 Glass Using Sol-Gel Technique

Published online by Cambridge University Press:  10 February 2011

Y. Zhou
Affiliation:
Dept. of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, De-Croylaan 2, B-3001 Heverlee, Belgium.
O. Van der Biest
Affiliation:
Dept. of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, De-Croylaan 2, B-3001 Heverlee, Belgium.
C. Groffils
Affiliation:
Dept. of Electrical Engineering, Katholieke Universiteit Leuven, Kard. Mercierlaan 94, B-3001 Heverlee, Belgium.
P. J. Luypaert
Affiliation:
Dept. of Electrical Engineering, Katholieke Universiteit Leuven, Kard. Mercierlaan 94, B-3001 Heverlee, Belgium.
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Abstract

Gels in the CaO-A12O3-SiO2 (CAS) system were successfully converted into glass in a single mode, tuneable, cylindrical microwave applicator, operating at 2.45 GHz in the TM012 mode. Transparent glasses were formed as a result of the direct microwave heating of homogeneous CAS gels to well above their melting temperature (1170°C). The effect of processing parameters, such as incident power level, sample mass and location, and thermal insulation has been investigated. The excellent coupling of the CAS gel with microwave can be understood from the structural evolution during sol-gel processing.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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