Modified resin–intermediate processing of perovskite powders: Part I. Optimization of polymeric precursors
- 1 February 1992
- journal article
- Published by Springer Science and Business Media LLC in Journal of Materials Research
- Vol. 7 (2), 502-510
- https://doi.org/10.1557/jmr.1992.0502
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.Keywords
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