Shaped articles of superconducting YBa₂Cu₃O₇ are made by a sol-gel process from a sol that is a mixture of an aqueous solution of barium hydroxide, a compatible aqueous solution of copper carboxylate, and at least one of a compatible aqueous solution of yttrium carboxylate and an aqueous suspension of colloidal oxide of yttrium. The sol has a Y:Ba:Cu molar ratio of approximately 1:2:3. After adjusting the concentration of the sol, it is formed into a shaped article which is dried and then fired to convert it into orthorhombic superconducting YBa₂Cu₃O₇.
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机译：超导体YBa 2 Cu 3 O 3的成型制品是通过溶胶-凝胶法由溶胶制成的，该溶胶是氢氧化钡水溶液，相容的羧酸铜水溶液，以及相容的羧酸钇水溶液和羧酸钇的至少一种的混合物。钇胶体氧化物的水悬浮液。溶胶的Y∶Ba∶Cu摩尔比约为1∶2∶3。调节溶胶的浓度后，将其成形为成型制品，将其干燥，然后烧成将其转化为正交晶的超导YBa 2 Cu 3 O 3。
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