Advanced (Nb,Ti) 3Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer

K. Watanabe, M. Motokawa, T. Onodera, K. Noto, K. Katagiri, T. Saito

研究成果: Conference article査読

11 被引用数 (Scopus)

抄録

We developed advanced (Nb,Ti) 3Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) 3Sn. In comparison with practical (Nb,Ti) 3Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) 3Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) 3Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) 3Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) 3Sn is a factor of two smaller than for Cu/(Nb,Ti) 3Sn, while the normal zone propagation velocity of 2 m/s remains the same.

本文言語English
ページ(範囲)561-566
ページ数6
ジャーナルMaterials Science Forum
308-311
出版ステータスPublished - 1999 1 1
イベントProceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger
継続期間: 1998 10 261998 10 29

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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