JOINED BODY OF SUPERCONDUCTING WIRE ROD, SUPERCONDUCTING COIL USING THE SAME AND METHOD OF PRODUCING SUPERCONDUCTING COIL

摘要

PROBLEM TO BE SOLVED: To provide a joined body of superconducting wire rods which can supplement mechanical strength of a bismuth-based superconducting wire rod by a simple configuration, improve handleability and durability in coiling and provide a superconductive coil having a high electromagnetic capacity, a superconductive coil using the joined body and a method of producing the superconductive coil.SOLUTION: In a joined body of superconducting wire rods, a plurality of tape-like superconducting wire rods 11 are lined up so as to extend in the longitudinal direction relative to a metal tape 12 and joined with a conductive metal 13 to form a joined body 14. The superconducting wire rods 11 contain a superconductor of a bismuth-based oxide, e.g. Bi2223 or Bi2212. A low-melting-point solder is used as the conductive metal 13. The superconducting wire rods 11 are joined with the metal tape 12 by the low-melting-point solder, and the superconducting wire rods 11 are also joined mutually with the conductive metal 13. The joined body 14 is wound through an insulation coating layer 15 to form a coil serving as a superconductive coil.