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Surface tension of zinc: the positive temperature coefficient.
Falke-WL; Schwaneke-AE; Nash-RW
Metall Trans 1977 Jun; 8B:301-303
The possible temperature coefficient of the surface tension of molten zinc has been confirmed experimentally with a maximum-bubble- pressure (mbp) system. The possible effects of the high vapor pressure of molten zinc on the surface tension have been checked by making the measurements at atmospheric pressure and repeating at 1,800 torr. The measurements were made on 99.999 pct zinc ranging from 436 deg to 806 deg c in an improved twin-tube mbp system. Results are that, over the given temperature range, the surface tension (y) of zinc is given by y (dynes/cm) = 839.7-125.7 E-0.00941 (T-419.5). The temperature (t) is in degrees centigrade. A total of 130 experimental values were determined with a correlation index of 0.98 With the equation. Comparison of this result with others in the literature are discussed.
Zinc-compounds; Temperature-effects; Thermal-effects; Thermal-reactions; Metallurgical-processes
OP; Journal Article
Metallurgical Transactions. B. Process Metallurgy