電流リード用金属メッシュ複合化Bi系超伝導円筒の作成

概要

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In order to improve the superconducting property and the mechanical property of Bi-2223 superconductor bulk, Ag-plated Ni wire meshes were composed in the sintered bulk. Ni wires of 0.25 mm in diameter were plated with silver of 30μm in thickness. In this study, we prepared a small rectangular bulk 5 mm in width, 22 mm in length, Ca 2 mm in thickness, and two sizes of the cylindrical sintered bulk, 27 mm in diameter and 50 mm in length and 31 mm in diameter and 110 mm in length. The samples were sintered at 845℃ for 50 h. Then the large cylindrical sample, after being treated with a cold isocratic press (CIP) at an intermediate pressing, was re-sintered at 845℃ for 50 h. The mechanical property of the rectangular sintered bulk was estimated by a three point bending test. By composing the material with one layer of mesh, the mechanical property was improved. The critical current density (J_c) of the composites was found to have creased when compared with the samples without the mesh.
工学院大学の論文
2005-10-30