Title:
【発明の名称】酸化物超電導線の製造方法
Document Type and Number:
Japanese Patent JP2592872
Kind Code:
B2
Abstract:
PURPOSE:To prevent the generation of bores and cracks, and to manufacture a superconductive wire of a high critical current density by introducing a columnar body formed by applying a pressure to an oxide superconductor powder, or a sintered body made by applying a heat treatment after such a pressure-formation, in a metal pipe, a surface reduction process is applied to the metal pipe, and heat-treating in the oxygen ambiance as it is or after the metal pipe is removed. CONSTITUTION:When an oxide superconductive wire is manufactured by using no reinforcement material, an oxide superconductor powder is formed by applying a pressure to make into a columnar body 2a with the outer diameter a little smaller than the inner diameter of a metal pipe 1, and the columnar body 2a is led in the metal pipe 1. Or, plural short column bodies 2b formed in the same way, or divided bodies 2c divided plurally are led in the metal tube 1 in series. On the other hand, when a reinforcement is used, a columnar body 2d with the outer diameter a little smaller than the inner diameter of the metal pipe and with holes 4 to insert reinforcements in the form of rotus root is formed by applying a pressure to the oxide superconductor powder, and linear reinforcement materials 3a are inserted to the holes 4, as well as the columnar body 2d is inserted to the metal pipe 1.
Inventors:
YAMADA MINORU
NAKAYAMA SHIGEO
KOIZUMI MISAO
MURASE AKIRA
NAKAYAMA SHIGEO
KOIZUMI MISAO
MURASE AKIRA
Application Number:
JP32172487A
Publication Date:
March 19, 1997
Filing Date:
December 19, 1987
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
B28B1/00; C01G1/00; C04B35/45; H01B12/04; H01B13/00; (IPC1-7): H01B13/00; B28B1/00
Domestic Patent References:
| JP64617A | ||||
| JP6412426A | ||||
| JP6443918A | ||||
| JP63307618A |
Attorney, Agent or Firm:
Suyama Saichi