Development of nb-ti-ta ternary alloy multifilamentary superconducting wire

T. Shimada, K. Wada, S. Meguro, S. Murase, S. Nakayama, T. Orikasa, K. Makishima, K. Watanabe, K. Tsuchiya, A. Yamamoto, T. Nakamoto, T. Shintomi

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1 Citation (Scopus)


The superconducting wire with approximately 10 (im diameter filaments of Nb-41wt%Ti28wt%Ta alloy was fabricated from our standard production billet. Critical current densities and upper critical fields after various heat treatments were measured in the temperature range of 4.2 K to 1.6 K. Thermo-mechanical treatments for a-Ti precipitates were optimized to improve critical current densities. A 27strand Rutherford type cable having a large keystone angle was trial-fabricated using the optimized-processed wires. The achieved J/s were 1383 A/mm2 (10 T and 1.9 K) and 602 A /mm2 (12 T and 1.9 K). The fabricated wire was proved to have high homogeneity and good workability.

Original languageEnglish
Pages (from-to)1731-1734
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART 2
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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