Abstract
In order to increase the current capacity of a high-temperature superconducting REBCO-coated conductor, in this paper, a lighter aluminum alloy was employed for mechanical reinforcement. Two GdBCO tapes fabricated using the reactive coevaporation by deposition and reaction (RCE-DR) process were laminated with three Al alloy (AA-3104) tapes using a two-step process involving pretinning and bonding. It was confirmed that ultrasonic soldering using Sn-3 wt% Ag-0.5 wt% Cu was efficient at laminating the GdBCO and aluminum alloy tapes. The bonding strengths and critical currents of the laminated conductors were evaluated.
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