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Combustion Synthesis of Sr-Substituted LaCo0.4Fe0.6O3 Powders

Published online by Cambridge University Press:  25 February 2011

J. J. Kingsley ,
L. A. Chick ,
G. W. Coffey ,
D. E. McCready  and
L. R. Pederson
J. J. Kingsley
Affiliation:
Pacific Northwest Laboratory, Richland, W A 99352
L. A. Chick
Affiliation:
Pacific Northwest Laboratory, Richland, W A 99352
G. W. Coffey
Affiliation:
Pacific Northwest Laboratory, Richland, W A 99352
D. E. McCready
Affiliation:
Pacific Northwest Laboratory, Richland, W A 99352
L. R. Pederson
Affiliation:
Pacific Northwest Laboratory, Richland, W A 99352
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Abstract

Sr-substituted perovskite LaCo0.4Fe0.6O3 is known to have excellent mixed ionic and electronic conductivity and increased O2 sorption characteristics. These perovskites are usually prepared by lengthy solid-state reactions of the component oxides at temperatures near 1150°C, and often produce inhomogeneous, multi-phase powders. Presently, it has been prepared by the calcination of combustion-derived fine mixed oxides at 850°C in 6 hrs. Combustion reactions are carried out using precursor solutions containing the corresponding metal nitrates (oxidizers) and glycine (fuel) at 250°C. The metal oxides produced by this process and subsequent calcination were characterized by XRD, TEM and BET surface area analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 113
Copyright
Copyright © Materials Research Society 1992

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References

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