TY - JOUR
T1 - Effects of joining conditions on the structures and properties of joints of REBCO coated conductors
AU - Maebatake, T.
AU - Mori, N.
AU - Teranishi, R.
AU - Mukaida, M.
AU - Yamada, K.
AU - Miura, M.
AU - Yoshizumi, M.
AU - Izumi, T.
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Materials and Power Application of Coated Conductors (M-PACC) through International Superconductivity Technology Center (ISTEC). The authors would like to thank N. Chikumoto, N. Sakai (SRL-ISTEC, Japan) and T. Yoshimoto (Kyushu University) for the cooperation in the study.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2010/11/1
Y1 - 2010/11/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physc.2010.05.112
DO - 10.1016/j.physc.2010.05.112
M3 - Article
AN - SCOPUS:77957892152
VL - 470
SP - 1358
EP - 1360
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 20
ER -