Title:
【発明の名称】酸化物超電導線材の製造方法
Document Type and Number:
Japanese Patent JP3109076
Kind Code:
B2
Abstract:
PURPOSE:To promote growth of a superconductive phase for obtaining higher critical current density by crushing an oxide superconductor or its raw material before a plastic processing process for making its average grain diameter not exceeding a prescribed value. CONSTITUTION:A process of filling a metal sheath with an oxide superconductor or its raw material for applying a plastic process is provided for a wire rod. In a prior process of a plastic processing process, the oxide superconductor or its raw material is crushed for making its average grain diameter not exceeding 1.0mum. Thereby, in the superconductor part, a non-superconductive phase 2 comes to be so small-sized as not to exceed 1mum, a superconductive phase 1 can grow without being hindered by the non-superconductive phase 2, the passage for a current flow is connected with no interruption by the non- superconductive phase 2 thus to obtain an oxide superconducting wire rod showing high critical current density.
Inventors:
Sofu Ueyama
Application Number:
JP399090A
Publication Date:
November 13, 2000
Filing Date:
January 10, 1990
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C04B35/00; B28B1/00; C01G1/00; C04B35/45; C04B35/622; H01B12/04; H01B13/00; (IPC1-7): H01B13/00; B28B1/00; C04B35/622
Domestic Patent References:
| JP6419617A | ||||
| JP2283618A | ||||
| JP1320257A |
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)