PROCESS FOR PRODUCING THICK-FILM TAPE-SHAPED RE-TYPE (123) SUPERCONDUCTOR - International Superconductivity Technology Center, The Juridical Foundation

Title:

PROCESS FOR PRODUCING THICK-FILM TAPE-SHAPED RE-TYPE (123) SUPERCONDUCTOR

Document Type and Number:

WIPO Patent Application WO/2007/069524

Kind Code:

A1

Abstract:

This invention provides a production process of a thick-film tape-shaped RE-type (123) superconductor having a high critical current value. The production process comprises providing a composite substrate comprising Gd2Zr2O7 and CeO2 stacked in that order on 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 760ºC, water vapor partial pressure 13.5%, and oxygen partial pressure 0.09% for superconductor production to produce a tape-shaped RE-type (123) superconductor comprising a YBCO superconducting film having a thickness of more than about 2 μm.

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Inventors:

TERANISHI, Ryo (1-14-3 Shinonome Koto-ku Tokyo, 62, 1350062, JP)
寺西亮 (〒62 東京都江東区東雲１丁目１４番３号財団法人国際超電導産業技術研究センター超電導工学研究所内 Tokyo, 1350062, JP)
AOKI, Yuji (1-14-3 Shinonome Koto-ku Tokyo, 62, 1350062, JP)
青木裕治 (〒62 東京都江東区東雲１丁目１４番３号財団法人国際超電導産業技術研究センター超電導工学研究所内 Tokyo, 1350062, JP)
MATSUDA, Junko (1-14-3 Shinonome Koto-ku Tokyo, 62, 1350062, JP)
松田潤子 (〒62 東京都江東区東雲１丁目１４番３号財団法人国際超電導産業技術研究センター超電導工学研究所内 Tokyo, 1350062, JP)

Application Number:

JP2006/324441

Publication Date:

June 21, 2007

Filing Date:

December 07, 2006

Export Citation:

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Assignee:

International Superconductivity Technology Center, The Juridical Foundation (Eishin Kaihatsu Bldg. 6F, 5-34-3 Shinbash, Minato-ku Tokyo 04, 1050004, JP)
財団法人国際超電導産業技術研究センター (〒04 東京都港区新橋５丁目３４番３号栄進開発ビル６階 Tokyo, 1050004, JP)
SWCC Showa Cable Systems Co., Ltd. (1-1-18, Toranomon Minato-ku Tokyo, 01, 1050001, JP)
昭和電線ケーブルシステム株式会社 (〒01 東京都港区虎ノ門１丁目１番１８号 Tokyo, 1050001, JP)
TERANISHI, Ryo (1-14-3 Shinonome Koto-ku Tokyo, 62, 1350062, JP)
寺西亮 (〒62 東京都江東区東雲１丁目１４番３号財団法人国際超電導産業技術研究センター超電導工学研究所内 Tokyo, 1350062, JP)
AOKI, Yuji (1-14-3 Shinonome Koto-ku Tokyo, 62, 1350062, JP)
青木裕治 (〒62 東京都江東区東雲１丁目１４番３号財団法人国際超電導産業技術研究センター超電導工学研究所内 Tokyo, 1350062, JP)

International Classes:

H01B13/00; C01G1/00; C01G3/00; H01F6/06; H01B12/06

Attorney, Agent or Firm:

MORIYA, Kazuo (Lots Wako Bldg. 1-13, Nihonbashi-Honcho 3-chom, Chuo-ku Tokyo23, Tokyo1030023, JP)

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