Mixed-Cation Oxide Powders via Resin Intermediates Derived from a Water-Soluble Polymer |
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| Authors: | Lone-Wen Tai Harlan U Anderson Paul A Lessing |
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| Affiliation: | Ceramic Engineering Department, University of Missouri—Rolla, Rolla, Missouri 65401;Ceramics Section, Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415 |
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| Abstract: | 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 LaMnO3 and Sr-doped La(Fe,Co)O3. Sr-doped LaCrO3 needed 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 ethylene glycol. |
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