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A Study of the Interface Between SnF2 Particles and Air in Stannous Fluoride Heated in Air

Published online by Cambridge University Press:  15 February 2011

Georges Denes  and
E. Laou
Georges Denes
Affiliation:
Concordia University, Laboratory of Solid State Chemistry and Mössbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8, Canada
E. Laou
Affiliation:
Concordia University, Laboratory of Solid State Chemistry and Mössbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8, Canada
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Abstract

Stannous fluoride SnF2 and mixed fluorides containing divalent tin are the highest performance fluoride ion conductors known to date. Since the fluoride ion mobility increases with temperature, and that these materials are sensitive to hydrolysis of the Sn-F bonds and oxidation of tin(II) to tin(IV) when heated, there is a significant chance of material degradation on heating. Surface oxidation provides a thin coating of highly refractory Sn02, which passivates against further degradation. The details and limits of this protection in SnF2 have been studied and are presented here.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 357: Symposium C – Structure and Properties of Interfaces in Ceramics , 1994 , 109
Copyright
Copyright © Materials Research Society 1995

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References

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