Abstract: A process for producing YBCO powders by pyrolysis involves preparing a clear aqueous solution containing the ions yttrium, barium and copper, in the final proportions desired for the powder, in the form of complex compounds, preferably citric complex compounds, and in the presence of a detonating system such as a combination of ammonium ions and nitrate ions. The clear solution is then concentrated by evaporation, until a violent combustion is triggered which is carried out at a high temperature, higher than 250.degree. C. and preferably higher than 850.degree. C.
Type:
Grant
Filed:
February 22, 1994
Date of Patent:
November 29, 1994
Assignee:
Centro Sviluppo Material S.p.A.
Inventors:
Stefano Fortunati, Mario Tului, Luca Risso