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Modified resin–intermediate processing of perovskite powders: Part I. Optimization of polymeric precursors

Published online by Cambridge University Press:  31 January 2011

Lone-Wen Tai  and
Paul A. Lessing
Lone-Wen Tai
Affiliation:
Ceramic Engineering Department, University of Missouri–Rolla, Rolla, Missouri 65401
Paul A. Lessing
Affiliation:
Ceramics Section, EG&G Idaho, Inc., Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415
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Abstract

The formation of a polyester between citric acid (CA) and ethylene glycol (EG) was found to be a decisive factor for the foaming of resin intermediates in a Pechini-type powder process. This process was modified by changing the organic mass ratio of CA/EG which results in ceramic powders with different morphologies. The most porous resin intermediate (with or without chelated cations) was prepared using a polymeric gel made of equimolar citric acid and ethylene glycol. It was also found that a premixing of organic components, prior to adding constituent nitrate solutions, makes the whole process more controllable.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 2 , February 1992 , pp. 502 - 510
Copyright
Copyright © Materials Research Society 1992

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