Abstract

Surface tension and excess surface tension of Pb–Sn molten mixtures have been evaluated theoretically over a wide range of temperature and compositions with the use of the statistical mechanical theory of Flory. A reasonable agreement has been obtained between theory and experiment for 10, 20, 30, 38, 1, 45, 60 and 80% Pb–Sn mixtures at 400, 600 and 700 °C temperature. A study of molecular interactions has also been made which agrees well both in sign and magnitude over a wide range of temperature and composition.

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