| 摘要 |
PURPOSE:To enable the flow of a large current, and reduce the intrusion heat quantity in the case of using this oxide superconductor wire rod for a current lead or the like by laminating oxide superconductor layers and metal layers alternately in one side or both sides of a metal substrate, and providing a metal layer as the most outer layer. CONSTITUTION:Oxide superconductor layers 3 and metal layers 2 are laminated alternately in one side or both sides of a metal substrate 1, and the layer 2 is provided as the most outer layer. At the time of manufacture, precursors of the oxide superconductors and the layer 2 are laminated, and the precursors are formed into the layers 3 by heat processing. The layer 2 is made of only Ag or Ag-metal except for Ag-Ag in consideration of the orientation of the superconductive grain, and as the metal except for Ag, Cu and Ni or the like is used from a point of conductivity. Oxide superconductor wire material, which has a high critical current density (Jc) value to enable the flow of a large current and which has the excellent mechanical strength to reduce the deterioration of Jc value, is thereby obtained, and furthermore, in the case where this oxide superconductor wire rod is used for a current lead or the like, intrusion of heat can be reduced. |
