Dan Semler on tue 16 oct 07
Hi John,
My first port of call in such cases is often the Literature =20
Abstracts of Ceramic Glazes by J. H. Koenig and W. H. Earhart. In this =20
case it reports three articles that may be of interest.
C.A Bradley, Measurement of Surface Tension of Viscous Liquids, =20
Journal of American Ceramics Society. 21 (10) 339-344 (1938). =20
Abstracts says that "A technique for the approximate measurement of =20
glasses by means of sessile drops is described."
B.S Ellefson and N. W. Taylor, Surface Properties of Fused Salts and =20
Glasses, I.
Sessile-Drop Method for Determining Surface Tension and Density of =20
Viscous Liquids at High Temperatures. Journal of the Amer. Ceram. Soc. =20
21 (6) 193-205 (1938)
A.E. Badger, C.W. Parmelee, and A.E. Williams, Surface Tension of =20
Molten Glasses, Jour. Amer. Ceram. Soc., 20 (10) 325-329 (1937). =20
Abstracts says "Surface-tension measurements were made on a series of =20
molten glasses at 120 and 1350 deg. C, using the maximum bubble =20
pressure method.
I do not know these papers and do not know to what extent either =20
method is described but knowing the names may well be enough to find =20
out more about that.
Wikipedia has an entry on Sessile Drop.
Bubble Pressure method info =20
s/bubble_pressure_e.html>
HTH
Thx
D
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