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Title:
PROCESS FOR PRODUCING MGB2 SUPERCONDUCTIVE WIRE EXCELLING IN CRITICAL CURRENT PERFORMANCE
Document Type and Number:
WIPO Patent Application WO/2005/104144
Kind Code:
A1
Abstract:
A method of simply and easily producing a wire from MgB2 exhibiting critical temperature Tc = 39 K. This method comprises the steps of: (a) preparing a mixed raw material consisting of powdery Mg and B, or a mixed raw material consisting of mixed powder of powdery Mg and B combined with MgB2 powder; (b) compression molding the obtained mixed raw material into pellets; (c) hermetically charging the obtained pellets in a metal tube coated with a carbon material, or first coating the pellets with a carbon material and hermetically charging the coated pellets in a metal tube; (d) working the metal tube having the pellets hermetically charged therein into a wire; and (e) according to necessity, coiling the obtained wire and performing heat treatment thereof in a pressurized inert gas atmosphere.

Inventors:
SHIMURA SATOSHI (JP)
TANAKA SHOJI (JP)
MACHI TAKATO (JP)
KOSHIZUKA NAOKI (JP)
MOCHIZUKI KAZUNARI (JP)
SHIBATA NOBORU (JP)
USHIO KAZUHIRO (JP)
YAMADA HIROYOSHI (JP)
Application Number:
PCT/JP2005/007714
Publication Date:
November 03, 2005
Filing Date:
April 22, 2005
Export Citation:
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Assignee:
TOKYO WIRE WORKS LTD (JP)
INT SUPERCONDUCTIVITY TECH (JP)
SHIMURA SATOSHI (JP)
TANAKA SHOJI (JP)
MACHI TAKATO (JP)
KOSHIZUKA NAOKI (JP)
MOCHIZUKI KAZUNARI (JP)
SHIBATA NOBORU (JP)
USHIO KAZUHIRO (JP)
YAMADA HIROYOSHI (JP)
International Classes:
C01B35/04; H01B12/04; H01B13/00; H01L39/24; (IPC1-7): H01B13/00; C01B35/04; H01B12/04
Foreign References:
JP2004111203A2004-04-08
JP2004047441A2004-02-12
JP2003331670A2003-11-21
JP2003217370A2003-07-31
JP2005063769A2005-03-10
JP2005063768A2005-03-10
Attorney, Agent or Firm:
Hirose, Shoichi (4-2 Nihonbashi Honcho 4-chome, Chuo-k, Tokyo 23, JP)
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