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Preparation of Strontium Titanate Powders by Decomposition of Polymeric Precursors

Published online by Cambridge University Press:  25 February 2011

S. L. Peschke ,
M. Ciftcioglu ,
D. H. Doughty  and
J. A. Voigt
S. L. Peschke
Affiliation:
New Mexico Institute of Mining and Technology, Socorro, NM
M. Ciftcioglu
Affiliation:
University of New Mexico, Dept. of Chemical and Nuclear Eng., Albuquerque, NM 87131
D. H. Doughty
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
J. A. Voigt
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
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Abstract

The effects of substituting poly(acrylic acid), PAA, and mucic acid for citric acid in the standard Pechini powder synthesis process was studied. Strontium titanate was chosen as the model system for this study. Powders were prepared from precursor solutions in which PAA (average molecular weight = 2,000 and 5000) was substituted for citric acid (up to 70% by weight), and with reduced weight of total organic reagents (50% reduction). The powders prepared with a 30% substitution of PAA for citric acid produced weakly agglomerated submicron particles after calcining. These powders contained a larger fraction of weak agglomerates than the powders prepared by the original Pechini process. As such, the PAA derived powder could be easily fractionated and dispersed with greater than 70% of the calcined powder having particle sizes less than 0.5 μm

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 101
Copyright
Copyright © Materials Research Society 1992

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References

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