Metallurgical and Materials Transactions B

, Volume 2, Issue 11, pp 3067–3071 | Cite as

The surface tensions of Pb, Sn, and Pb-Sn alloys

  • D. W. G. White
Process Metallurgy


The surface tensions of 99.9999 pct Pb and Sn and of alloys made from lead and tin of the same purity have been measured by the sessile-drop method. The surface tension of lead was determined from the melting point, the surface tension of tin from 200°C (32°C of supercooling) and the surface tensions of the Pb−Sn alloys from the respective liquidus temperatures, all, up to a temperature of about 560°C. Within the limits of experimental error, data for both pure metals plot in a rectilinear fashion with negative slopes, thus: γlead=472.7−0.085t(±5) dyne/cm γtin=569.0−0.080t((±5) dyne/cm The surface tensions of Pb−Sn alloys are not straight-line functions of temperature and the evidence indicates that the temperature coefficients of surface tension are slightly positive at the liquidus temperature.


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Copyright information

© The Minerals, Metals & Materials Society - ASM International - The Materials Information Society 1971

Authors and Affiliations

  • D. W. G. White
    • 1
  1. 1.Department of Energy, Mines and ResourcesOffice of Assistant Deputy Minister (Science and Technology)OttawaCanada

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