| 摘要 |
PURPOSE:To obtain a large-area oxide superconductive sintered body film without being restricted by the hydrolysis rate by separately dissolving specified metal alkoxide materials in solvents, hydrolyzing the materials, depositing the atomized solns. on a substrate to form oxide powder, and then heating the deposit. CONSTITUTION:The metal alkoxide materials respectively selected from Cu, Ba, Y, and rare-earth elements are separately dissolved in solvents, and water is added to hydrolyze the materials. The obtained colloidal solns. are respectively charged in raw material vessels 1, and the solns. are sent under pressure to raw material transport pipes 3A and then sent to a raw material switching device 2 to adjust the composition. The mixed colloidal soln. is supplied to an atomizer 4, and sprayed on a substrate 5. In this case, the solvent is volatilized, and only the metal oxide fine particles are deposited on the substrate 5. The particles together with the substrate 5 are heat-treated in an oxygen atmosphere, and then annealed. As a result, an oxide superconductive sintered body can be easily produced by a wet method. |
