Effects of joining conditions on the structures and properties of joints of REBCO coated conductors

T. Maebatake, N. Mori, R. Teranishi, M. Mukaida, K. Yamada, M. Miura, M. Yoshizumi, T. Izumi

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    6 Citations (Scopus)

    Abstract

    We investigated the joining of two REBCO (REBa2Cu 3O7 X, RE = Y, Gd) coated conductors using the diffusion joint process. REBCO coated conductors with stabilizing silver layer were joined by various joining conditions. Two pieces of the silver layer of tapes were overlapped in a face to face manner. Then, the pieces were pressurized and heat-treated at about 623-673 K under a pressure using some weights in oxygen atmosphere. Finally, the joint resistivity was obtained as low as about 10 nΩcm2 by 10 MPa for YBCO tape. The joint resistivity of the GdBCO tape was 50-60 nΩ cm2, which was higher than YBCO, but improved to 37 nΩ cm2 at 10 MPa by improving the joining conditions. Influences of joining conditions such as pressure and evenness of specimens and holders were investigated on joint adhesion and resistivity.

    Original languageEnglish
    Pages (from-to)1358-1360
    Number of pages3
    JournalPhysica C: Superconductivity and its applications
    Volume470
    Issue number20
    DOIs
    Publication statusPublished - Nov 1 2010

    All Science Journal Classification (ASJC) codes

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

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