Abstract
The relaxation of the fibre-on-plate geometry was studied experimentally using glass. Various fibre diameters and temperature/time schedules were used. Excellent agreement with the theoretical predictions of Hopper was obtained. The determination of the surface tension of glass at low temperature by this method is discussed. A value of 0.19 N m−1 at 600 °C was measured for a modified Na-K-Ba-Sr-silica glass, which differs significantly from the sessile-drop value of 0.35 N m−1, extrapolated from high-temperature data. Influencing factors are discussed. The difference is probably due to the presence of water vapour which considerably lowers the surface tension of glass at low temperature.
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de With, G., Corbijn, A.J. Fibre-on-plate experiments: relaxation and surface tension. JOURNAL OF MATERIALS SCIENCE 30, 1742–1749 (1995). https://doi.org/10.1007/BF00351604
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DOI: https://doi.org/10.1007/BF00351604