Effect of Fe2O3 concentration on the structure of the SiO2-Na2O-Al2O3-B2O3 glass system

Spectrochim Acta A Mol Biomol Spectrosc. 2011 Oct 15;81(1):140-3. doi: 10.1016/j.saa.2011.05.074. Epub 2011 Jun 17.

Abstract

The structural properties of the glass matrix 40SiO(2)·30Na(2)O·1Al(2)O(3)·(29-x)B(2)O(3)·xFe(2)O(3) (mol%), 0.0≤x≤29.0 were studied by X-ray diffraction (XRD), differential thermal analysis (DTA) and Raman and infrared spectroscopy (FT-IR). XRD demonstrated Fe(3)O(4) crystal formation for Fe(2)O(3) concentrations of 29.0 mol%. DTA showed that glass transition and crystallization temperatures changed as a function of Fe(2)O(3) concentration and that these alterations were related to structural change in the glass system. Interesting aspects of Raman and FT-IR spectra were found, and this gives information about of the structure changes in Si-O-Si units of these glasses as a function of Fe(2)O(3) concentration.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Oxide / chemistry*
  • Boron Compounds / chemistry*
  • Crystallization
  • Differential Thermal Analysis
  • Ferric Compounds / chemistry
  • Ferric Compounds / pharmacology*
  • Glass / chemistry*
  • Molecular Structure
  • Osmolar Concentration
  • Oxides / chemistry*
  • Silicon Dioxide / chemistry*
  • Sodium Compounds / chemistry*
  • Spectroscopy, Fourier Transform Infrared
  • Spectrum Analysis, Raman

Substances

  • Boron Compounds
  • Ferric Compounds
  • Oxides
  • Sodium Compounds
  • ferric oxide
  • sodium oxide
  • boron oxide
  • Silicon Dioxide
  • Aluminum Oxide