Superconducting Electrical Joint Design for HTS Wires

A superconducting electrical joint that links sections of Bi-2212 conductors. To establish high transport current carrying capabilities, Bi-2212 is heat treated at ~890°C and at elevated pressures. The heat treatment of the wire and the formation of the superconducting joints are carried out in the same heat treatment. To compensate for the pressure differential between the furnace and the inside of the wire (for Bi-2212 densification), the wires ends are sealed.  High pressure is applied to complete a full reaction process and ensure densification of the Bi-2212.