Superconducting Properties of Bi2Sr2CaCu2Oy Tape Prepared by the Continuous Heat Treatment Technique

  • T. Hasegawa
  • Y. Hikichi
  • H. Kumakura
  • H. Kitaguchi
  • K. Togano
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

85m-long Bi2Sr2CaCu2Oy (Bi-2212)/Ag multilayer tape was successful fabricated. The tape was prepared by the slurry-painting technique. The multilayer tape was facricated by stacking three Bi-2212/Ag monolayer tapes prepared by the slurry-painting technique, wrapping them with a Ag foil, and finally giving a continuous heat treatment of partial melting and slow cooling. The continuous heat treatment was done by moving the tape along the temperature gradient in a specially designed pipe furnace. Jc values of the wire were 8 × l03 A/cm2 at 77 K 0T and higher than 1×10 5A/cm2 at 4.2K, 12T. The variation of Jc value along the 85m-long tape was within 15%. The multilayer tapes showed good strain tolelance of Jc. Jc values unchanged until the bending strain of 0.7% was applied. A small coil fabricated using the “React & Wind” technique had a Jc value almost equal to that of a short straight sample.

Keywords

Partial Melting Bias Magnetic Field Tape Conductor Composite Tape Pancake Coil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • T. Hasegawa
    • 1
  • Y. Hikichi
    • 1
  • H. Kumakura
    • 2
  • H. Kitaguchi
    • 2
  • K. Togano
    • 2
  1. 1.Showa Electric Wire & Cable Co. Ltd.Kawasaki-shi, Kanagawa, 210Japan
  2. 2.National Research Institute for MetalsTsukuba-shi, Ibaraki, 305Japan

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