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Study of Glass Ceramic Diffusion During Hot Isostatic Pressing of Encapsulated PZT Ceramics

Published online by Cambridge University Press:  15 February 2011

A. Leriche ,
P. Aleksandrowicz  and
B. Thierry
A. Leriche
Affiliation:
Critt Laboratoire des Matériaux Industriels, University of Valenciennes Z.I. Champ de l'Abbesse - 59600 Maubeuge - France
P. Aleksandrowicz
Affiliation:
Critt Laboratoire des Matériaux Industriels, University of Valenciennes Z.I. Champ de l'Abbesse - 59600 Maubeuge - France
B. Thierry
Affiliation:
Critt Laboratoire des Matériaux Industriels, University of Valenciennes Z.I. Champ de l'Abbesse - 59600 Maubeuge - France
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Abstract

The development of high performance piezoelectric and dielectric ceramics needs a close control of density and microstructure. Hot isostatic pressing technique using glass encapsulation method allows to produce dense and complex shape ceramics with controlled grain size. However, diffusion phenomena occur at glass ceramic interface during HIP treatment.

In this study, the glass diffusion into PZT ceramics was examined for different glass types. We noted silicon species diffusion into ceramic and also lead migration into glass resulting from PZT decomposition.

HIP carried out with diffusion barrier surrounding ceramic samples allows to prevent such a diffusion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 251: Symposium S – Pressure Effects on Materials Processing and Design , 1991 , 265
Copyright
Copyright © Materials Research Society 1992

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References

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