Title:
【発明の名称】非偏析酸化物超伝導体銀複合体
Document Type and Number:
Japanese Patent JPH09500351
Kind Code:
A
Abstract:
A method for forming unsegregated metal oxide-silver composites includes preparing a precursor alloy comprising silver and precursor elements of a desired metal oxide and oxidizing the alloy under conditions of high oxygen activity selected to permit diffusion of oxygen into silver while significantly restricting the diffusion of the precursor elements into silver, such that oxidation of the precursor elements to the metal oxide occurs before diffusion of the metallic elements into silver. Further processing of the metal oxide composite affords an oxide superconducting composite with a highly unsegregated microstructure. A novel precursor may be used in conjunction with the oxidation under conditions of high oxygen activity to further restrict segregation of metal oxide-silver composite. A precursor composite for preparation of an oxide superconductor includes a primary alloy phase of constituent elements of a desired oxide superconductor; and a secondary phase comprising copper, the secondary phase supported by the primary alloy phase. The composite may additionally include a matrix material for supporting the primary alloy phase and second phase disposed therein. The composite is oxidized to form an oxide superconductor composite.
Inventors:
Otto, Alexander
Lawrence Jay, Macer
Podberg, Eric Earl
Sandhage, Kenneth H.
Craven, Christopher A
Shreber, Jeffrey Dee
Lawrence Jay, Macer
Podberg, Eric Earl
Sandhage, Kenneth H.
Craven, Christopher A
Shreber, Jeffrey Dee
Application Number:
JP50309595A
Publication Date:
January 14, 1997
Filing Date:
June 23, 1994
Export Citation:
Assignee:
American Superconductor Corporation
International Classes:
C01G1/00; C01G3/00; C01G13/00; C01G15/00; C01G29/00; C04B35/45; C04B35/65; H01L39/24; (IPC1-7): C04B35/45; C01G1/00; C01G3/00; C01G13/00; C01G15/00; C01G29/00
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)