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Kinetics of the thermal polishing of the rough glass surface

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Abstract

A simple mathematical model of thermal polishing of rough glass surface as observed by light beam thermal analysis (LBTA) is presented. The rough surface is represented by a triangular profile used for calculation of the light beam intensity attenuation and an equivalent rectangular profile is used for the modeling of the time course of the thermal polishing. Computational results obtained for the NBS 711 viscosity standard glass showed that the characteristic temperature, obtained from the series of LBTA experiments after extrapolation to zero starting surface roughness, does not represent the glass transition temperature, but it corresponds to the viscosity value of about 109 dPa.s. The validity of the proposed model was confirmed by the comparison of simultaneous LBTA and viscosity measurements of CaO-Y2O3-Al2O3-SiO2 glasses.

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Authors and Affiliations

  1. Joint Glass Laboratory of Institute of Inorganic Chemistry of SAS and, Alexander Dubąek University of Trenąín, Študentská 2, Trenąín, SK-911 50, Slovak Republic E-mail

    M. Chromcíková & M. Liška

  2. Faculty of Special Machinery, Alexander Dubąek University of Trenąín, Študentská 2, Trenčín, SK-911 50, Slovak Republic

    M. Martišková

Authors
  1. M. Chromcíková
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  2. M. Liška
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  3. M. Martišková
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Correspondence to M. Chromcíková.

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Chromcíková, M., Liška, M. & Martišková, M. Kinetics of the thermal polishing of the rough glass surface. Journal of Thermal Analysis and Calorimetry 76, 107–113 (2004). https://doi.org/10.1023/B:JTAN.0000027809.27838.ad

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  • DOI: https://doi.org/10.1023/B:JTAN.0000027809.27838.ad

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