Mixed‐Cation Oxide Powders via Resin Intermediates Derived from a Water‐Soluble Polymer
作者:
Lone‐Wen Tai,
Harlan U. Anderson,
Paul A. Lessing,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 12
页码: 3490-3494
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb04458.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Submicrometer powders of complex oxides were prepared via resin intermediates based on a starch type of organic precursor. A commercially available water‐soluble starch derivative was (for the first time) used as the organic base for solution synthesis of ceramic powders. Calcination of the charred, fluffy, amorphous resins at a temperature below 600°C for 4 h yielded perovskite powders of Sr‐doped LaMnO3and Sr‐doped La(Fe,Co)O3. Sr‐doped LaCrO3needed to be calcined above 750°C to ensure phase purity and to remove organic residue. Due to the low cost of starch derivatives, the process has the potential of being more economical than the commonly used Pechini's type process, which utilizes citric acid and ethyle
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