Patents Assigned to The Jurical Foundation
  • Patent number: 8409657
    Abstract: A production process of a thick-film tape-shaped RE-type (123) superconductor having a high critical current value. The production process has the steps of providing a composite substrate having Gd2Zr2O7 and CeO2 stacked in that order onto a Hastelloy substrate, coating a raw material solution prepared by dissolving a trifluoroacetate of Y and Ba and a naphthenate of Cu onto the composite substrate, heat treating the coated composite substrate by calcination, then subjecting the calcined assembly to intermediate heat-treatment at a temperature below the temperature of heat-treatment for superconductor production, and then heat treating the assembly in an argon gas atmosphere under conditions of highest heating temperature 760° C., water vapor partial pressure 13.5%, and oxygen partial pressure 0.09% for superconductor production to produce a tape-shaped RE-type (123) superconductor having a YBCO superconducting film having a thickness of more than about 2 ?m.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 2, 2013
    Assignees: The Jurical Foundation, SWCC Showa Cable Systems Co., Ltd.
    Inventors: Ryo Teranishi, Yuji Aoki, Junko Matsuda, Koichi Nakaoka, Teruo Izumi, Yuh Shiohara