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Journal of Superconductivity

, Volume 9, Issue 3, pp 281–285 | Cite as

Development of high-Tc superconducting Bi-2223 tape joints

  • K. Chen
  • C. H. Tai
  • L. Horng
Article

Abstract

High-Tc superconducting joints between Ag-clad Bi-2223 tapes have been developed for persistent current applications. Two presintered tapes with one side of the silver stripped were lapped and then wrapped by a silver foil. The complex was uniaxially pressed followed by appropriate sintering to form a high-Tc superconducting tape joint. It was found that the ratio of critical currents through the joint to that of the tape,Icj/Ic, depended on the uniaxial pressure and the sintering conduction. At liquid-nitrogen temperature 77 K,Icj/Ic=99% has been achieved. Persistent current loops formed by Bi-2223 tapes have also been fabricated and tested. Joint resistance of a loop was determined to be ∼4×10−13 Ω between the decay time of 120 and 3600 sec.

Key words

Bi 2223 tape joints 

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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • K. Chen
    • 1
  • C. H. Tai
    • 1
  • L. Horng
    • 2
  1. 1.Materials Research LaboratoriesIndustrial Technology Research InstituteChutung, HsinchuTaiwan 310, ROC
  2. 2.Department of PhysicsNational Chang-Hua University of EducationChanghuaTaiwan

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