Abstract
Surface segregation is the key to understanding the surface tension γ of alloys. The basic phenomena can be demonstrated qualitatively by using the ideal solution model. For a binary system, this model is first used to explain the temperature dependence of the surface tension. A simple criterion is established for sign reversal of the temperature coefficient. The ideal solution model is then extended to include the effect of compound formation. A simple explicit equation is proposed which fits existing data surprisingly well.
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Paper presented at the Seventh International Workshop on Subsecond Thermophysics, October 6-8, 2004, Orléans, France.
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Egry, I. The Surface Tension of Binary Alloys: Simple Models for Complex Phenomena. Int J Thermophys 26, 931–939 (2005). https://doi.org/10.1007/s10765-005-6675-y
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DOI: https://doi.org/10.1007/s10765-005-6675-y