Dynamic viscosity of some silicate melts to 1688°C under atmospheric pressure

The dynamic viscosity of six anhydrous silicate melts, obtained by fusing rocks collected from the Department of Energy's Nevada Test Site, has been measured from 1120 to 1688°C under atmospheric pressure using a rotational cup viscometer of the Couette type. The melts exhibit Newtonian behavio...

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Bibliographic Details
Published in:Thermochimica acta 1980-04, Vol.37 (2), p.189-195
Main Authors: Piwinskii, A.J., Weed, H.C.
Format: Article
Language:English
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Summary:The dynamic viscosity of six anhydrous silicate melts, obtained by fusing rocks collected from the Department of Energy's Nevada Test Site, has been measured from 1120 to 1688°C under atmospheric pressure using a rotational cup viscometer of the Couette type. The melts exhibit Newtonian behavior in this temperature interval. Melt viscosities decrease in the order: tuff >; alluvium 2; basalt. Activation energy for viscous flow in the interval 1120–1688°C ranges from 268 to 393 kJ.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(80)80040-2