| 摘要 |
PURPOSE:To easily produce a light and high strength superconducting structure at a low cost by embodying a metal net layer of a specific metal in an oxide superconductor containing Cu. CONSTITUTION:Raw materials (containing Cu) for an oxide superconductor are mixed at a specific ratio and the mixture is burned at about 850 deg.C for 50hr in air. The resulting sintered oxide superconductor is pulverized and the powder is mixed with a 10wt.% soln. of an acrylic resin (e.g. polyisobutyl methacrylate) in an organic solvent (e.g. terpineol) at a wt. ratio (powder: soln.) of 3:1 to get a paste. A metallic net substrate with about 20 mesh made of one or more kinds of metals selected from Cu, Ni, Ag, Pt and Ni (e.g. Ni substrate) is dipped in the paste and oxide superconductor membranes of about 200mum thickness are formed on both sides of the substrate by a dip-coating method. The product is baked at about 845 deg.C for 50hr in air and annealed to obtain the objective composite material containing the metallic net substrate 2 embedded in the oxide superconductor 1. |
