Ceramics-Silikáty 26, (3) 251 - 259 (1982) |
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| MEASURING VISCOSITY WITH THE PENETRATION VISCOMETER I
A Study of the Viscosity of Industrially Fused Basalts in the Course of Separation and Starting Crystallization
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Exnar Petr, Voldán Jan
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State Glass Research Institute, Škroupova 957, 501 92 Hradec Králové
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Viscosity was measured of basalt glasses of industrially fused olivinic basalts (Slapany and Nová Baňa) on the penetration viscometer in the temperature range 660–780 °C using time dwells of 20, 40, 60, 120, 180, 240, 300 and 360 min. The viscosity values were found to vary from 108 up to over 10¹² dPas. The course of viscosity curves contributed to better understanding of the complex course of nucleation in basalt glasses. |
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