PRECURSOR FOR MANUFACTURE OF Nb3Sn SUPERCONDUCTING WIRE ROD, AND Nb3Sn SUPERCONDUCTING WIRE ROD

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.

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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:

JPH0371517A	1991-03-27
JPH09245539A	1997-09-19
JPH08287752A	1996-11-01
JP2002117734A	2002-04-19
JPS60253114A	1985-12-13
JPS49114389A	1974-10-31
JP2006046742A	2006-02-16

Other References: