Abstract
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 4.2K and a magnetic field of 14T. The monocore and 19-core superconducting tapes with three kinds of sheath-Ag, Zr-reinforced Ag, and Ag/Zr-reinforced Ag double layer-were incorporated with reinforcing CuAg tape. As a result of this reinforcement, the 0.2% proof stress of superconducting tapes increased markedly without significant degradation of the Ic. The limiting value in strain for Ic degradation in Ag-sheathed tape was slightly improved, and that in stress was markedly improved. The improvement in the limiting value in strain or stress for the degradation was more evident in tapes with Zr-reinforced Ag sheath, compared with those with pure Ag sheath.
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Schedule a callMore From: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
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