Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR PRODUCING Nb3Sn SUPERCONDUCTIVE WIRE BY POWDER PROCESS
Document Type and Number:
WIPO Patent Application WO/2005/117032
Kind Code:
A1
Abstract:
A method for producing an Nb3Sn superconductive wire by the powder process which comprises packing a sheath made of Nb or an Nb based alloy with, as a raw material powder, an intermetallic compound powder obtained from at least one metal powder selected from a Ta powder and an Nb powder and an Sn powder or a mixed powder containing the metal powder and an Sn powder, subjecting the sheath to diameter reduction, to thereby form a wire, and then subjecting the resultant wire to a heat treatment, to thereby form a super conductive layer at the interface between the above sheath and the above powder packed, wherein as the above at least one metal powder selected from a Ta powder and an Nb powder, use is made of a powder in which secondary particles are formed by the agglomeration of primary particles into a coral form.

Inventors:
Miyazaki, Takayoshi c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Kato, Hiroyuki c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Zaitsu, Kyoji c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Tachikawa, Kyoji c/o Tokai University Educational System (1117 Kitakanam, Hiratsuka-shi Kanagawa 92, 25912, JP)
Application Number:
PCT/JP2005/008970
Publication Date:
December 08, 2005
Filing Date:
May 17, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohamacho 2-chome Chuo-k, Kobe-shi Hyogo 85, 65185, JP)
Miyazaki, Takayoshi c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Kato, Hiroyuki c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Zaitsu, Kyoji c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO (5-5 Takatsukadai 1-chome, Nishi-k, Kobe-shi Hyogo 71, 65122, JP)
Tachikawa, Kyoji c/o Tokai University Educational System (1117 Kitakanam, Hiratsuka-shi Kanagawa 92, 25912, JP)
International Classes:
B22F5/12; B22F7/00; B22F7/04; C22C1/04; C22F1/00; H01B12/02; H01B13/00; H01L39/24; (IPC1-7): H01B13/00; B22F7/00; C22F1/00; H01B12/02
Foreign References:
JP2003187654A2003-07-04
JPH04141916A1992-05-15
JPS5269296A1977-06-08
Attorney, Agent or Firm:
Kotani, Etsuji (Nichimen Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, 53000, JP)
Download PDF: