Nb3Ga multifilamentary superconducting wire and process for preparing the same
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United States of America Patent
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Jan 18, 2005
Grant Date -
Feb 12, 2004
app pub date -
Mar 27, 2003
filing date -
Mar 28, 2002
priority date (Note) -
Expired
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Abstract
By rapidly heating a precursor wire having a multifilamentary structure in which multiple composite cores in which a composite compound of an Nb--Ga compound and Nb is embedded in Nb are embedded in Nb, Ta, Nb-base alloy or Ta-base alloy as a matrix material to a temperature range of 1400 to 2100.degree. C. in 2 seconds, quenching the precursor wire at a rate of 5000.degree. C./second or larger, and subjecting the precursor wire to additional heat treatment at a temperature range of 600 to 850.degree. C. for 1 to 400 hours, a superconducting wire having a multifilamentary structure in which multiple composite cores in which a composite compound containing Nb.sub.3 Ga of a stoichiometric composition embedded in Nb are embedded in Nb, Ta, Nb-base alloy or Ta-base alloy as a matrix material is obtained.
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