TY - JOUR
T1 - Stress/strain dependence of critical current in Cu-Ag externally reinforced Ag-Zr/Bi-2212 superconducting tapes
AU - Katagiri, K.
AU - Kasaba, K.
AU - Shoji, Y.
AU - Ishizaki, M.
AU - Watanabe, K.
AU - Noto, K.
AU - Hiraoka, M.
N1 - Funding Information:
The authors wish to express their thanks to T. Takahashi in Iwate University for his assistance in this experiment. The I c measurements were carried out at the High Field Laboratory for Superconducting Materials, Institute for Material Research, Tohoku University. This work was partly supported by the Iwatani Naoji Foundation's Research Grant.
PY - 1999/5
Y1 - 1999/5
N2 - The effects of external reinforcement on the mechanical property and the axial tensile stress/strain dependence of the critical current Ic in Bi(2212) superconducting tapes were evaluated at a temperature of 4.2 K and a magnetic field of 14 T. The monocore and 19-core superconducting tapes with three kinds of sheath - Ag, Ag-Zr and Ag-Zr/Ag double layer - were incorporated with a reinforcing Cu-Ag tape. As a result of this reinforcement, the 0.2% proof stress of superconducting tapes increased markedly without significant degradation of the Ic. The tolerance limit in strain for Ic degradation in the tapes was slightly improved and those of stress were markedly improved. The improvement in the tolerance limit in strain or stress for the degradation was more evident in the tapes with the Ag-Zr sheath, compared with those with a pure Ag sheath.
AB - The effects of external reinforcement on the mechanical property and the axial tensile stress/strain dependence of the critical current Ic in Bi(2212) superconducting tapes were evaluated at a temperature of 4.2 K and a magnetic field of 14 T. The monocore and 19-core superconducting tapes with three kinds of sheath - Ag, Ag-Zr and Ag-Zr/Ag double layer - were incorporated with a reinforcing Cu-Ag tape. As a result of this reinforcement, the 0.2% proof stress of superconducting tapes increased markedly without significant degradation of the Ic. The tolerance limit in strain for Ic degradation in the tapes was slightly improved and those of stress were markedly improved. The improvement in the tolerance limit in strain or stress for the degradation was more evident in the tapes with the Ag-Zr sheath, compared with those with a pure Ag sheath.
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U2 - 10.1016/S0011-2275(99)00052-1
DO - 10.1016/S0011-2275(99)00052-1
M3 - Article
AN - SCOPUS:0033317829
VL - 39
SP - 453
EP - 458
JO - Cryogenics
JF - Cryogenics
SN - 0011-2275
IS - 5
ER -