High Pressure, High Temperature Viscometer
- 1 November 1967
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 38 (11) , 1646-1650
- https://doi.org/10.1063/1.1720628
Abstract
An apparatus for measuring the relative viscosity of molten glass‐forming oxides at elevated temperatures and pressures is described. It utilizes a concentric cylinder viscometer and electric furnace enclosed in a steel pressure bomb and is gas pressured. Four thermocouples and three heating circuits enable the temperature of the sample to be controlled to within ±0.2°. Data on the pressure dependence of viscosity of molten boron trioxide in the temperature range of 380–470°C and at pressures up to 300 bars are presented.Keywords
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