Processing tetramethylammonium-carbonate-coprecipitated slurries to obtain small-particle-size YBa2Cu3O7
- 1 February 1991
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 6 (2) , 220-226
- https://doi.org/10.1557/jmr.1991.0220
Abstract
The effect of different drying and calcination methods on the ultimate particle size of YBa2Cu3O7 (Y-123) has been investigated. The starting material was a tetramethylammonium (TMA) carbonate-precipitated slurry. Spray-drying the slurry after filtering and reslurrying (to remove residual TMA) was most effective in the ultimate formation of finely divided Y-123. The morphology of the spray-dried powder could be preserved by calcining in very low total pressures of flowing oxygen. When a slurry with 0.16% solids content was spray dried, and this powder calcined at 750 °C in 2 Torr of flowing oxygen, a Y-123 powder of mean particle size 0.74 μm (66% submicron) was obtained.Keywords
This publication has 2 references indexed in Scilit:
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