Title:
SUPERCONDUCTING WIRE MATERIAL AND METHOD FOR PREPARATION THEREOF, AND SUPERCONDUCTING MAGNET USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2002/103716
Kind Code:
A1
Abstract:
A superconducting wire material which comprises a superconductor containing boron packed or involved therein, characterized in that a metallic cover material of a single metal selected from among gold, silver, aluminum, copper, iron, platinum, palladium, nickel, stainless steel, chromium, magnesium, tantalum, niobium, titanium, tin, beryllium, tungsten and cobalt or an alloy comprising a plurality of the above metals is arranged around the perimeter of the superconductor, the superconductor after the final processing has a density of 80 % or more of the theoretical density thereof, and the superconducting wire material has a critical temperature of 30 K or higher&semi a method for preparing the superconducting wire material&semi and a superconducting magnet using the material. The superconducting wire material exhibits a practical critical current density.
Inventors:
TANAKA KAZUHIDE (JP)
OKADA MICHIYA (JP)
MORITA HIROSHI (JP)
SUZUKI YASUO (JP)
OKADA MICHIYA (JP)
MORITA HIROSHI (JP)
SUZUKI YASUO (JP)
Application Number:
PCT/JP2002/005814
Publication Date:
December 27, 2002
Filing Date:
June 11, 2002
Export Citation:
Assignee:
HITACHI LTD (JP)
TANAKA KAZUHIDE (JP)
OKADA MICHIYA (JP)
MORITA HIROSHI (JP)
SUZUKI YASUO (JP)
TANAKA KAZUHIDE (JP)
OKADA MICHIYA (JP)
MORITA HIROSHI (JP)
SUZUKI YASUO (JP)
International Classes:
H01B12/10; H01B13/00; H01F6/06; H01F6/00; H01L39/14; H01L39/24; (IPC1-7): H01B12/04; H01B13/00; H01F6/00
Other References:
CANFIELD P.C. ET AL.: "Superconductivity in dense MgB2 wires", PHYSICAL REVIEW LETTERS, vol. 86, no. 11, 12 March 2001 (2001-03-12), pages 2423 - 2426, XP002952797
JIN S. ET AL.: "High critical currents in iron-clad superconducting MgB2 wires", NATURE, vol. 411, no. 6837, 31 May 2001 (2001-05-31), pages 563 - 565, XP002228599
CUNNINGHAM C.E. ET AL.: "Synthesis and processing of MgB2 powders and wires", PHYSICA, vol. 353, no. 1/2, 1 May 2001 (2001-05-01), pages 5 - 10, XP004240410
GLOWACKI B.A. ET AL.: "Superconductivity of powder-in-tube MgB2 wires", PHYSICA C, vol. 14, no. 4, April 2001 (2001-04-01), pages 193 - 199, XP002228484
JUN NAGAMATSU ET AL.: "Superconductivity at 39K in magnesium diboride", NATURE, vol. 410, no. 6824, 1 March 2001 (2001-03-01), pages 63 - 64, XP002948368
JIN S. ET AL.: "High critical currents in iron-clad superconducting MgB2 wires", NATURE, vol. 411, no. 6837, 31 May 2001 (2001-05-31), pages 563 - 565, XP002228599
CUNNINGHAM C.E. ET AL.: "Synthesis and processing of MgB2 powders and wires", PHYSICA, vol. 353, no. 1/2, 1 May 2001 (2001-05-01), pages 5 - 10, XP004240410
GLOWACKI B.A. ET AL.: "Superconductivity of powder-in-tube MgB2 wires", PHYSICA C, vol. 14, no. 4, April 2001 (2001-04-01), pages 193 - 199, XP002228484
JUN NAGAMATSU ET AL.: "Superconductivity at 39K in magnesium diboride", NATURE, vol. 410, no. 6824, 1 March 2001 (2001-03-01), pages 63 - 64, XP002948368
Attorney, Agent or Firm:
Takada, Yukihiko (Saiwai-cho 2-chome Hitachi-shi, Ibaraki, JP)
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