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Liquid-phase sintering of barium titanate with lithium fluoride

Published online by Cambridge University Press:  31 January 2011

A. Potin ,
J. Ravez  and
J. P. Bonnet
A. Potin
Affiliation:
Laboratoire de Chimie du Solide du CNRS, Université de Bordeaux 1,351, cours de la Libération, 33405 Talence Cedex, France
J. Ravez
Affiliation:
Laboratoire de Chimie du Solide du CNRS, Université de Bordeaux 1,351, cours de la Libération, 33405 Talence Cedex, France
J. P. Bonnet
Affiliation:
Laboratoire de Chimie du Solide du CNRS, Université de Bordeaux 1,351, cours de la Libération, 33405 Talence Cedex, France
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Abstract

Lithium fluoride added to BaTiO3 as a sintering additive can be worthwhile for realizing cheap multilayer ceramic capacitors. Such an addition leads to a decrease both in sintering and Curie temperatures from 1400°–930°C and from 120°–10°C, respectively. A transmission electron microscopy (TEM) study of thin samples quenched from intermediary stages has shown the microstructure of the sintered material to be complex. A liquid-phase sintering, mechanism occurring at temperatures slightly lower than 730°C has been proposed. Volatility accounts for partial or complete disappearance of the liquid during heat treatments.

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Articles
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Journal of Materials Research , Volume 2 , Issue 4 , August 1987 , pp. 485 - 488
Copyright
Copyright © Materials Research Society 1987

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References

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