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Indenter-Penetration Viscometry of Glasses for Small-Sized Samples under Conditions of Continuous Heating

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Abstract

A variant of the indentation method is proposed for measuring the viscosity of glasses in the range 1011–105.5 P for samples 10 × 10 × 4 mm3 in size. In this method, the viscosity is determined from the penetration rate of spherical or conical indenters under conditions of continuous heating. It is shown that the standard error in the measurements does not exceed 0.1log(η). The described variant of the indentation method makes it possible to considerably decrease the time of measurements and to extend the range of the measured viscosity for easily crystallizing glasses toward higher temperatures.

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  1. Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, ul. Odoevskogo 24/2, St. Petersburg, 199155, Russia

    V. P. Klyuev

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  1. V. P. Klyuev
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Klyuev, V.P. Indenter-Penetration Viscometry of Glasses for Small-Sized Samples under Conditions of Continuous Heating. Glass Physics and Chemistry 26, 559–565 (2000). https://doi.org/10.1023/A:1007148130303

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