SUPERCONDUCTING WIRE AND METHOD FOR PRODUCING THE SAME

• Main Authors: IWANAKA TAKUMU, KUSUNOKI TOSHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 16.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONDUCTORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INSULATORS; METALLURGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

To provide a superconducting wire that shows excellent critical current density properties even when a 20K magnetic field is applied in parallel with a base material, and has excellent peel strength and corrosion resistance.SOLUTION: A superconducting wire has a metal base material, an MgBthin film formed on the surface of one side of the metal base material, and a protective layer provided on the surface of the other side of the MgBthin film. The protective layer contains at least one of Nb, Ti, Ta, W, and Mo.SELECTED DRAWING: Figure 4 【課題】本発明は、２０Ｋ磁場を基材に並行に印加した場合であっても、良好な臨界電流密度特性を示し、かつ剥離強度や耐食性に優れた超電導線材を提供することを目的とする。【解決手段】上記課題を解決するために、本発明に係る超電導線材は、金属基材と、前記金属基材に形成されたＭｇＢ２薄膜と、前記ＭｇＢ２薄膜の前記金属基材とは反対側の表面に設けられた保護層と、を備え、前記保護層は、Ｎｂ、Ｔｉ、Ｔａ、Ｗ、及びＭｏの少なくともいずれかを含むことを特徴とする。【選択図】 図４