Title:
PROCESS FOR PRODUCING BISMUTH-BASED OXIDE SUPERCONDUCTOR, AND SUPERCONDUCTIVE WIRE
Document Type and Number:
WIPO Patent Application WO/2006/112195
Kind Code:
A1
Abstract:
This invention provides a process for producing a bismuth-based oxide superconductor, which can provide a high critical current density, and a superconductive wire comprising the bismuth-based oxide superconductor produced by the process. The production process is a process for producing a 2223 phase-containing bismuth-based oxide superconductor having a 2223 composition in a composition of Bi-Sr-Ca-Cu or (Bi,Pb)-Sr-Ca-Cu and comprises a first step of filling a starting material containing a 2212 phase having a critical temperature of 70 K or below and having a 2212 composition in a composition of Bi-Sr-Ca-Cu or (Bi,Pb)-Sr-Ca-Cu into a metal sheath, a second step of subjecting the metal sheath filled with the starting material to plastic working, and a third step of heat treating the metal sheath filled with the starting material.
Inventors:
AYAI NAOKI (JP)
Application Number:
PCT/JP2006/304560
Publication Date:
October 26, 2006
Filing Date:
March 09, 2006
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
AYAI NAOKI (JP)
AYAI NAOKI (JP)
International Classes:
H01B12/10; C01G1/00; C01G29/00; H01B13/00
Foreign References:
| JPH09115356A | 1997-05-02 | |||
| JPH04237910A | 1992-08-26 | |||
| JP2000200520A | 2000-07-18 |
Other References:
See also references of EP 1868211A4
Attorney, Agent or Firm:
Fukami, Hisao (Nakanoshima Central Tower 22nd Floor, 2-7,
Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka, JP)
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