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Preparation of BSCCO Precursors by Water Extraction Variant of Sol-Gel Process

Published online by Cambridge University Press:  25 February 2011

A. Deptula ,
W. Lada ,
T. Olczak  and
A. Di Bartolomeo
A. Deptula
Affiliation:
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
W. Lada
Affiliation:
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
T. Olczak
Affiliation:
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
A. Di Bartolomeo
Affiliation:
ENEA, C. R. E. Casaccia, Italy
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Abstract

The starling acetate sols of molar compositions of Bi:Pb:Sr:Ca:Cu=I-2:O:2:l: 2, 11–2:0:2:2:3 and 111–1.6:0.4:2:2:3 were prepared by NH4OH addition at various rates, followed by evaporation. Sols were gelled by further evaporation to shard or to microspheres (diameter below 100 μm) by water extraction from the sol emulsion drops formed in 2-ethyl-l-hexanol. The gels were converted to BSCCO phases by thermal treatment. The processes were characterized by XRD and IR examinations. The influence of the sol preparation step connected with formation of polynuclear cations on the following stages of the process was examined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 161
Copyright
Copyright © Materials Research Society 1992

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References

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