| 摘要 |
PURPOSE:To stabilize the characteristic by applying the hydrostatic pressure machining process and the hydrostatic pressure extrusion machining to a ceramic superconductor difficult to be machined into a wire or a tape. CONSTITUTION:The preset quantity of the powder of Y, Ba, and Cu is first blended, and it is sintered to form a Y-Ba-Cu-O ceramic superconductive wire, which is then crushed into powder. This powder is filled in a rubber tube, and the hydrostatic pressure pressurizing process is applied with a high pressure. A molding thus obtained is stored in a Cu-Ni alloy tube, both ends are sealed to form an extrusion billet. The two-stage hydrostatic extrusion machining is applied to this billet to generate a rod. Then, it is formed into a wire by the swaging machining and into a tape by the rolling machining. A specific stable ceramic superconductive wire can be thereby formed.
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