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YBa2Cu3O7的成型制品是通过溶胶-凝胶工艺由溶胶制成的，该溶胶是氢氧化钡水溶液，相容的羧酸铜水溶液和相容的羧酸钇水溶液和氢氧化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。在调节溶胶的浓度之后，将其形成为成型制品，将其干燥，然后烧成将其转化为正交晶的超导YBa 2 Cu 3 O 7。
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