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Title:
PRECURSOR FOR MANUFACTURE OF Nb3Sn SUPERCONDUCTING WIRE ROD, AND Nb3Sn SUPERCONDUCTING WIRE ROD
Document Type and Number:
WIPO Patent Application WO/2007/099820
Kind Code:
A1
Abstract:
This invention provides a precursor for the manufacture of an Nb3Sn superconducting wire rod. The precursor comprises a superconducting core part comprising a Cu-Sn-base alloy and a plurality of Nb-base filaments disposed in the Cu-Sn-base alloy, the Nb-base filament being formed of Nb or an Nb-base alloy, a diffusion barrier layer disposed on the outer periphery of the superconducting core part and formed of Nb, and a stabilization copper layer, wherein the distance from the inner peripheral face of the diffusion barrier layer to the Nb-base filaments present in the outermost layer part in the superconducting core part is set to not less than 2 μm in a final shape after area reduction.

Inventors:
MIYAZAKI TAKAYOSHI
MURAKAMI YUKINOBU
Application Number:
PCT/JP2007/053115
Publication Date:
September 07, 2007
Filing Date:
February 20, 2007
Export Citation:
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Assignee:
KOBE STEEL LTD (JP)
JAPAN SUPERCONDUCTOR TECH (JP)
MIYAZAKI TAKAYOSHI
MURAKAMI YUKINOBU
International Classes:
H01B13/00; C22C27/02; H01B12/10; H01F6/06; C22C9/00; C22C9/02; C22C9/06; C22C13/00
Foreign References:
JPH0371517A1991-03-27
JPH09245539A1997-09-19
JPH08287752A1996-11-01
JP2002117734A2002-04-19
JPS60253114A1985-12-13
JPS49114389A1974-10-31
JP2006046742A2006-02-16
Other References:
See also references of EP 2006863A4
Attorney, Agent or Firm:
OGURI, Shohei et al. (7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, JP)
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