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


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.


Nitrogen Nitride Fluorine Expansion Coefficient Characteristic Temperature 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

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

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