Abstract
X-ray powder diffractometry using CrKα radiation has revealed the existence of surface layers 5Μm deep in samples of high-density polycrystalline sodium Β-alumina. The surface layer is prominent by virtue of its crystal lattice distortion in which the c-axis is elongated by 1%. Its presence is due to ion exchange between Na+ and H3O+ that occurs on exposure to air.
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References
G. Yamaguchi and K. Suzuki, Bull. Chem. Soc. Japan 41 (1968) 93.
C. R. Peters, M. Bettman, J. W. Moore and M. D. Glick, Acta. Cryst. B27 (1971) 1826.
J. H. Kennedy, in “Solid Electrolytes”, edited by S. Geller (Springer-Verlag, Berlin, Heidelberg, and New York, 1976) p. 119.
F. G. Will, J. Electrochem. Soc. 123 (1976) 834.
B. Dunn, J. Amer. Ceram. Soc. 64 (1981) 125.
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Heavens, S.N. Surface layers in polycrystalline sodium \-alumina. J Mater Sci 17, 965–969 (1982). https://doi.org/10.1007/BF00543514
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DOI: https://doi.org/10.1007/BF00543514