Advertisement

Journal of Materials Science

, Volume 30, Issue 22, pp 5649–5651 | Cite as

The effect of nitrogen addition on certain properties and structure of fluorozirconate glasses

  • L. Samek
Papers
  • 35 Downloads

Abstract

The effect of nitrogen on the properties and structure of fluorozirconate glasses in the system ZrF4-BaF2-LaF3-AlF3 (ZBLA) was investigated. Nitrogen was introduced by means of aluminium nitride. The substitution of fluorine by nitrogen in ZBLA glasses resulted in a considerable increase of microhardness, reduction of the linear expansion coefficient, and a small increase in characteristic temperatures. Structural investigations comprised RDF and Fourier transform-infrared (FT-IR) examinations. From radial distribution function (RDF) it followed that the introduction of nitrogen caused an increase of the mean distances Zr-F(N), Ba-F(N), La-F(N). From FT-IR spectra, it followed that nitrogen became incorporated into the bridging fluorine atoms which was evinced by a shifting of bands deriving from the bending vibrations between the [ZrF6]2− octahedra towards higher wave numbers.

Keywords

Nitrogen Nitride Fluorine Expansion Coefficient Characteristic Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. E. Rundle, Acta Crystallogr. 1 (1948) 180.CrossRefGoogle Scholar
  2. 2.
    S. Podsiadlo, “Nitridy” (Warsaw, 1991).Google Scholar
  3. 3.
    G. W. Samsonow, “Nitridy” (Naukowa Dumka, Kijew, 1969).Google Scholar
  4. 4.
    R. E. Loehman, in “Treatise on Materials Science and Technology”, M. Tomorawa and R. H. Doremus (eds) Vol. 26 (1985) Academic Press, New York, p. 119.Google Scholar
  5. 5.
    C. Schrimpf and G. H. Frischat, J. Non-Cryst. Solids 56 (1983) 153.CrossRefGoogle Scholar
  6. 6.
    J. G. Clabes, R. E. Fern and G. H. Frischat, J. Vac. Sci. Technol. A4 (1986) 1580.CrossRefGoogle Scholar
  7. 7.
    W. K. Tredway and S. H. Risbud, J. Non-Cryst. Solids 56 (1983) 135.CrossRefGoogle Scholar
  8. 8.
    R. K. Brow and C. G. Pantano, Commun. Am. Ceram. Soc. 4 (1984) C-72.Google Scholar
  9. 9.
    D. Ahlf and G. H. Frischat, Mater. Sci. Forum 32–33 (1988) 149.Google Scholar
  10. 10.
    W. L. Vaughn and S. H. Risbud, J. Mater. Sci. Lett. 3 (1984) 162.CrossRefGoogle Scholar
  11. 11.
    S. H. Risbud and W. L. Vaughn, Mater. Sci. Forum 19–20 (1987) 515.CrossRefGoogle Scholar
  12. 12.
    G. H. Frischat and D. Ahlf, in “Halide Glasses for Infrared Fiberoptics”, edited by R. M. Almeida (Dorbrecht, Boston, London, 1976) p. 280.Google Scholar
  13. 13.
    T. Penkala, “Zarys krystalografi” (Warsaw, 1976).Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • L. Samek
    • 1
  1. 1.Department of Glass and EnamelsUniversity of Mining and MetallurgyCracowPoland

Personalised recommendations