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Precipitation of PZT and PLZT Powders Using a Continuous Reactor

Published online by Cambridge University Press:  28 February 2011

R. W. Schwartz ,
D. J. Eichorst  and
D. A. Payne
R. W. Schwartz
Affiliation:
Department of Ceramic Engineering and Materials Research Laboratory University of Illinois at Urbana-Champaign, Urbana, IL 61801
D. J. Eichorst
Affiliation:
Department of Ceramic Engineering and Materials Research Laboratory University of Illinois at Urbana-Champaign, Urbana, IL 61801
D. A. Payne
Affiliation:
Department of Ceramic Engineering and Materials Research Laboratory University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Abstract

PZT and PLZT powders were prepared from nitrate and chloride precursors in a continuous constant volume precipitator. After precipitation, the powders were dried by a variety of methods, including: spray-drying, freeze-drying (in liquid nitrogen), and centrifugal freeze-drying. Spraydried powders were found to have a spherical morphology, and to be solid. The particle size was in the micron range. Powders dried by nitrogen freezedrying were characterized by an open morphology of agglomerated platelets. For centrifugally freeze-dried powders, particle size analyses were found to fit a population balance model, giving crystallite, cluster, and agglomerate population densities and growth rates.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 123
Copyright
Copyright © Materials Research Society 1986

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References

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