Title:
NIOBIUM-ALUMINUM PRECURSOR WIRE, NIOBIUM-ALUMINUM PRECURSOR TWISTED WIRE, NIOBIUM-ALUMINUM SUPERCONDUCTING WIRE, AND NIOBIUM-ALUMINUM SUPERCONDUCTING TWISTED WIRE
Document Type and Number:
WIPO Patent Application WO/2023/089919
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a niobium-aluminum precursor wire having properties such as expression of flexibility and ensuring a large single-wire length, as well as a twisted wire, a superconducting wire, and a superconducting twisted wire formed of the niobium-aluminum precursor wire. The present invention provides a niobium-aluminum precursor wire and a twisted wire using the same, the niobium-aluminum precursor wire including: a rod-like winding core (5) formed of a stabilized copper, or a stabilized copper and an unstabilized copper; a laminated body (3) that is wound around the winding core (5) and that is formed of an aluminum foil and a niobium foil laminated one on the other; and a covering body (1) that covers the circumference of the laminated body and that is formed of a stabilized copper, or a stabilized copper and an unstabilized copper. The volume ratio of the stabilized copper with respect to the unstabilized copper contained in the precursor wire is 0.5-2.0, and the volume ratios of the stabilized copper contained in the winding core (5) and the covering body (1) are within prescribed ranges. According to the present invention, a superconducting wire and a superconducting twisted wire are provided by thermally treating the precursor wire and the twisted wire.
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Inventors:
KIKUCHI AKIHIRO (JP)
IIJIMA YASUO (JP)
YAMAMOTO MASARU (JP)
KAWANO MASATOSHI (JP)
OTSUBO MASATO (JP)
IIJIMA YASUO (JP)
YAMAMOTO MASARU (JP)
KAWANO MASATOSHI (JP)
OTSUBO MASATO (JP)
Application Number:
PCT/JP2022/033465
Publication Date:
May 25, 2023
Filing Date:
September 06, 2022
Export Citation:
Assignee:
NAT INST MATERIALS SCIENCE (JP)
JAPAN SUPERCONDUCTIVITY APPLICATION DEV INC (JP)
JAPAN SUPERCONDUCTIVITY APPLICATION DEV INC (JP)
International Classes:
H01B12/04; H01B12/08; H01F6/06
Foreign References:
| JP2016225288A | 2016-12-28 | |||
| JPH08212854A | 1996-08-20 | |||
| JPH04132108A | 1992-05-06 | |||
| JPH04132109A | 1992-05-06 | |||
| JP2010262759A | 2010-11-18 |
Other References:
KIKUCHI AKIHIRO, IIJIMA YASUO, YAMAMOTO MASARU, KAWANO MASATOSHI, IMANI JUNYA, ICHINOSE ATARU: "Jelly-Roll Processed Nb3Al Super-Fine Monofilament Wires with Cu/non-Cu Ratio of 1.0", 27TH INTERNATIONAL CONFERENCE ON MAGNET TECHNOLOGY (MT27), 18 November 2021 (2021-11-18), XP093068948
Attorney, Agent or Firm:
ASAMURA IP P.C. (JP)
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