Title:
PROCESS FOR PRODUCING MgB2 SUPERCONDUCTING WIRE ROD
Document Type and Number:
WIPO Patent Application WO/2007/049623
Kind Code:
A1
Abstract:
This invention provides a process for producing an MgB2 superconducting
wire rod, comprising filling powder of an MgB2 superconductor into
a pipe followed by wire working, and an MgB2 superconducting wire rod
produced by the process. The production process is characterized in that, due
to lowered crystallinity, the powder of the MgB2 superconductor used
has high critical current density (Jc) and excellent grain-boundary bonding
properties. In the production process, an MgB2 superconducting wire
rod having a Jc value, which is satisfactorily high for practical use, and homogeneous
over a long length can be produced by an ex-situ process using as a sheath material
a material having a composition suitable for service environment.
Inventors:
NAKANE TAKAYUKI (JP)
KITAGUCHI HITOSHI (JP)
FUJII HIROKI (JP)
KUMAKURA HIROAKI (JP)
KITAGUCHI HITOSHI (JP)
FUJII HIROKI (JP)
KUMAKURA HIROAKI (JP)
Application Number:
PCT/JP2006/321174
Publication Date:
May 03, 2007
Filing Date:
October 24, 2006
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
NAKANE TAKAYUKI (JP)
KITAGUCHI HITOSHI (JP)
FUJII HIROKI (JP)
KUMAKURA HIROAKI (JP)
NAKANE TAKAYUKI (JP)
KITAGUCHI HITOSHI (JP)
FUJII HIROKI (JP)
KUMAKURA HIROAKI (JP)
International Classes:
H01B13/00; C01B35/04; C01G1/00; H01B12/10
Foreign References:
| JP2005310600A | 2005-11-04 | |||
| JP2005129412A | 2005-05-19 | |||
| JP2006143500A | 2006-06-08 | |||
| JP2004111237A | 2004-04-08 | |||
| JP2003331670A | 2003-11-21 |
Attorney, Agent or Firm:
NISHIZAWA, Toshio (11-1 Minami-Aoyama 6-chome, Minato-k, Tokyo 62, JP)
Download PDF:
Previous Patent: THERMAL RECORDING MATERIAL
Next Patent: ORAL SOLID PREPARATION CONTAINING CABERGOLINE
Next Patent: ORAL SOLID PREPARATION CONTAINING CABERGOLINE