Microstructure and Physicochemical Studies of Pure and ZincaSubstituted Lithium Ferrites Sintered above 1000ADGC

Microstructure and Physicochemical Studies of Pure and ZincaSubstituted Lithium Ferrites Sintered above 1000ADGC

The effects of sintering temperature above 1000 degree C and of cooling rate on the microstructual development of pure and Zn-substituted spinel lithium ferrites are discussed. The strong dependence of microstructural features on cooling rate can be explained on the basis of the precipitation of alp...

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Veröffentlicht in:Journal of the American Ceramic Society 1995-02, Vol.78 (2), p.365-368
Hauptverfasser: Bermejo, Edelio, le Mercier, Thierry, Quarton, Michel
Format: Artikel
Sprache:eng
Schlagworte:
Ceramics
Lithium ferrite
Microstructure
Sintering
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Zusammenfassung:The effects of sintering temperature above 1000 degree C and of cooling rate on the microstructual development of pure and Zn-substituted spinel lithium ferrites are discussed. The strong dependence of microstructural features on cooling rate can be explained on the basis of the precipitation of alpha -Fe2O3 or the formation of a solid solution of ferrite phase with Fe3O4 occurring during sintering above 1000 degree C. These two phenomena are studied by detailed characterization analyses: SEM, XRD, magnetization, and ac electrical resistivity measurements.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1995.tb08809.x