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Temperature-induced changes in the composition of floatglass surfaces.

M Laube1, F Rauch

  • 1Institut für Kernphysik, J.W. Goethe Universität, D-60486, Frankfurt/Main, Germany.

Analytical and Bioanalytical Chemistry
|October 1, 1995
PubMed
Summary

This study analyzed float glass surfaces using ion beam analysis to understand hydrogen behavior. Researchers found that temperature and hydration treatments significantly alter surface composition and hydrogen profiles in glass.

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Analytical Chemistry

Background:

  • Float glass is a critical material for modern construction and automotive industries.
  • The surface composition of float glass differs from its bulk and is susceptible to environmental and thermal changes.
  • Understanding surface alterations is crucial for predicting glass durability and performance.

Purpose of the Study:

  • To investigate the changes in float glass surface composition and hydrogen concentration.
  • To analyze the effects of high-temperature treatments and hydration on glass surfaces.
  • To elucidate the mechanisms of hydrogen interaction with float glass.

Main Methods:

  • Utilized ion beam analysis techniques for detailed surface characterization.

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  • Employed resonant nuclear reaction analysis (using the 15N technique) to determine hydrogen concentration profiles.
  • Applied Rutherford backscattering spectrometry (RBS) to obtain profiles of heavier elements like sodium and tin.

    • Main Results:

    • Determined hydrogen concentration profiles in float glass surfaces.
    • Quantified changes in surface stoichiometry, including sodium and tin, after thermal treatment up to 700°C.
    • Observed significant alterations in surface composition due to controlled hydration treatments.

    Conclusions:

    • Surface composition of float glass is dynamic and sensitive to thermal and hydration processes.
    • Ion beam analysis provides effective methods for characterizing surface modifications.
    • Further research into hydrogen uptake and release mechanisms is warranted for material optimization.