Mechanism of Volume Viscosity in Molten Bismuth and Lead
- 15 May 1971
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 54 (10) , 4331-4340
- https://doi.org/10.1063/1.1674681
Abstract
Ultrasonic absorption and velocity have been measured in molten bismuth and lead from the melting point to 650°C. Both liquids were found to exhibit a volume viscosity which increased with increasing temperature. Near the melting point the ratio of volume to shear viscosity was 0.6 and 4.6 for lead and bismuth, respectively. A two-state model using the experimental coordination number is proposed which gives the proper magnitude and temperature dependence of the volume viscosity in these liquids. The theory is also found to be applicable to molten salts.Keywords
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