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Journal of Materials Science

, Volume 44, Issue 2, pp 664–670 | Cite as

Formation and properties of nitrogen-rich strontium silicon oxynitride glasses

  • Ali Sharafat
  • Bertil Forslund
  • Jekabs Grins
  • Saeid EsmaeilzadehEmail author
Article

Abstract

Glass formation in the system Sr–Si–O–N was investigated and properties of obtained glasses evaluated. The glass-forming region was determined for glasses prepared by melting mixtures of Sr metal, SiO2 and Si3N4 powders in Nb crucibles at 1600–1750 °C in nitrogen atmosphere using a radio frequency furnace. The glasses were found to be homogenous, translucent gray to opaque black, and to contain high contents of N (up to 45 e/o) and Sr (up to 36 e/o). The glass transition temperature (790–973 °C), density (2.99–4.07 g/cm3), microhardness (8.10–10.50 GPa), and refractive index (1.65–1.93) are strongly correlated with the amounts of Sr and N. The properties are compared with findings in other oxynitride silicate glass systems.

Keywords

Glass Transition Temperature Oxynitride Glass Network Sialon Wide Compositional Range 

Notes

Acknowledgements

S. Esmaeilzadeh possesses a research fellowship from the Royal Swedish Academy of Sciences, financed by the Knut and Alice Wallenberg Foundation. The Swedish Research Council is acknowledged for financial support.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Ali Sharafat
    • 1
  • Bertil Forslund
    • 1
  • Jekabs Grins
    • 1
  • Saeid Esmaeilzadeh
    • 1
    Email author
  1. 1.Department of Physical, Inorganic and Structural Chemistry, Arrhenius LaboratoryStockholm UniversityStockholmSweden

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