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Bulk and surface properties of liquid Ga–Tl and Zn–Cd alloys

  • O. Akinlade EMAIL logo and O. E. Awe

Abstract

A simple thermodynamic model, based on the formation of self-associates, has been used to correlate the bulk and surface properties of mixing of liquid Ga–Tl and Zn–Cd alloys at temperatures of 973 K and 900 K, respectively. The model enables us to explain the positive deviation of the properties of mixing of the two liquid alloys from the ideal solution behavior. Our calculations indicate that the degree of phase separation in Zn–Cd, as measured using the Warren –Cowley short-range order parameter, is less than that in Ga–Tl.With regards to the surface, we show that the surface decomposition in Zn–Cd liquid alloys is greater than in Ga–Tl. We explain the contrast in the bulk and surface properties in terms of the possible roles of the entropic and enthalpic effects on the properties of mixing.


O. Akinlade Department of Physics University of Agriculture Abeokuta, Nigeria Tel.: +234 80 4212 0826

Dedicated to Prof. Dr. Ferdinand Sommer on the occasion of his 65th birthday


  1. The authors would like to express their gratitude to Prof. Sommer for various kinds of assistance and research collaborations with him that have impacted positively on their researches over the years. OA is grateful to the Alexander von Humboldt foundation for funds that facilitated the publication of this paper.

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Received: 2005-09-28
Accepted: 2005-11-22
Published Online: 2022-01-19

© 2006 Carl Hanser Verlag, München

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