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Development of superconducting YBa2Cu3O7-x powders by spray drying

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Spray drying is a technique used for the production of powders with high chemical homogeneity, consisting of spherical shaped grains with well-controlled particle size distribution, which show very good rheological characteristics. In the present study, the spray drying technique was employed for the production of a homogeneous precursor powder for the synthesis of the superconducting YBa2Cu3O7-x powder. The study, which is concerned with the spray drying of either a solution of precursor nitrate salts or a slurry of precursor oxides, showed that both the powder characteristics and the process yield depend significantly on the drying parameters and that the maximum yield can be obtained within narrow condition limits. A comparison study between the drying of the nitrate salts solution and that of the oxides slurry showed that in the second case the efficiency achieved was much higher.

Document Type: Miscellaneous

Affiliations: 1: Department of Mineral Resources Engineering, Technical University of Crete, University Campus, 73100 Chania, Greece 2: Department of Metallurgy and Mining Engineering, National Technical University of Athens, Athens, Greece 3: CERECO S.A., 72nd km of Athens-Lamia National Road, PO Box 146, 341 00 Chalkida, Greece

Publication date: January 1, 2002


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