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Metalorganic and Microwave Processing of Eutectic Al2O3-ZrO2 Ceramics

Published online by Cambridge University Press:  15 February 2011

M. Willert-Porada  and
T. Gerdes
M. Willert-Porada
Affiliation:
Universität Dortmund, Department Chemical Engineering, Div. of Material Sciences, D-44221 Dortmund, F.R. Germany
T. Gerdes
Affiliation:
Universität Dortmund, Department Chemical Engineering, Div. of Material Sciences, D-44221 Dortmund, F.R. Germany
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Abstract

The spatial distribution and sintering activity of ZrO2 governs the microstructure evolution upon microwave sintering of alumina-zirconia ceramics. Using the same microwave sintering profile thermal runaway occurs, when ZrO2-powders with high specific surface area are employed, yielding ceramics with eutectic Al2O3-ZrO2 inclusions, whereas ZTA-type ceramics are obtained from low specific surface area powders. Microwave sintering yields ceramics with a higher density at a particular sintering temperature as compared to conventional sintering.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 347: Symposium O – Microwave Processing of Materials IV , 1994 , 563
Copyright
Copyright © Materials Research Society 1994

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