| 摘要 |
PURPOSE:To manufacture a metal coating type oxide superconductive wire, which has the excellent characteristics without sintering growth, stably in performing heat treatment of a metal tube or a flat body filled with the power of an oxide superconductor under the pressurized atmosphere. CONSTITUTION:The powder of Bi group such as Bi2Sr2CaCu2Oy as an oxide superconductor is filled in a tube made of metal such as silver, and the tube is rolled by a pinch roll or the like at need to form a flat body 1. This flat form 1 is housed in a heat-proof container 5, and this container 5 is held by a quartz tube 4, and they are heated by heating machines 3 such as a heater or the like. In the container 5, the inner pressure is increased with a rise of the temperature to prevent the growth of the flat body 1. The wire material having the excellent superconducting characteristic can be thereby obtained. Sintering for bulking the metal tube and the powder therein to integrate them can be performed to the secondary shape such as a coil. |
