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公开(公告)号:US09680081B2
公开(公告)日:2017-06-13
申请号:US13677622
申请日:2012-11-15
申请人: HITACHI CABLE, LTD. , INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION , NATIONAL INSTITUTE FOR MATERIALS SCIENCE
CPC分类号: H01L39/12 , H01B12/02 , H01B13/00 , H01L39/14 , H01L39/2403 , H01L39/2409 , Y10T428/12819
摘要: ProblemThere is proposed an innovative cross-sectional structure, with an idea contrary to the conventional one, utilizing the non-reactivity between Cu and Ta (or between Ag and Nb, Ta) in a high-temperature short-time heat treatment, thus achieving (1) the suppression of the low magnetic-field instability, (2) excellent wire drawability of a precursor wire, and (3) the reduction of the cost required for the incorporation of a stabilizer.Means for ResolutionThere is proposed a structure having an assembly of a plurality of single wires, wherein the assembly is covered with an outer cover (skin) formed from Nb or Ta, wherein each of the single wires has an Nb/Al composite filament region which is formed from a composite of Nb and Al mixed in an Nb:Al molar ratio of 3:1, and which is covered with a partition formed from Nb or Ta, and further covered with an interfilamentary barrier formed from Cu or Ag disposed around the partition.