Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRODUCTION OF POWDERY STARTING MATERIAL FOR OXIDE SUPERCONDUCTOR
Document Type and Number:
Japanese Patent JPS645912
Kind Code:
A
Abstract:

PURPOSE: To obtain a powdery starting material giving superconductive ceramics having a high critical temp. by dissolving respective alkoxides of a rare-earth element, an alkaline-earth metal and copper in alcohol, mixing the resulting solns., adding water to coprecipitate hydroxides of the three elements and calcin ing the hydroxides.

CONSTITUTION: Alkoxides of a rare earth element, an alkaline-earth metal and copper, e.g., Y(OC2H5)3, Ba(OC2H5)2 and Cu(OC2H5)2 are separately dissolved in alcohol. The resulting solns. are mixed and water is added to the mixture to coprecipitate hydroxides of the three elements by hydrolysis. The hydroxides are calcined to obtain a desired powdery starting material for an oxide supercon ductor. When the starting material is sintered, uniform superconductive ceramic having a high oxygen concn. can be produced.


Inventors:
SAWANO KIYOSHI
Application Number:
JP15785887A
Publication Date:
January 10, 1989
Filing Date:
June 26, 1987
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORP
International Classes:
C01G3/00; C01G1/00; C04B35/00; C04B35/45; H01B12/00; (IPC1-7): C01G3/00; C04B35/00; H01B12/00
Attorney, Agent or Firm:
Tomoyuki Yathata