Superconducting Joint Structures For Bi-2212 Wires Using a Powder-in-Tube Technique

Bi-2212/Ag superconducting wires are being considered as key conductor candidates for the development of high-field magnets. This work focuses on design and testing various joint structures multifilamentary Bi-2212 using powder-in-tube techniques. The joints made between unreacted subsequently heat treated with wires. microstructure transport properties different architectures including step joints, scarf etched have been explored. performance etched-joints found to be very sensitive etching parameters time, making it difficult develop a reliable jointing process. Scarf can carry higher currents (320 A 475 in self-field at 4 K) than (225 result connecting larger area exposed filaments without damaging filaments.