Comment on¶“On the relationship between the entropy and enthalpy of interfacial segregation” by L. Rubinovich and M. Polak

  • P. Lejček
  • S. Hofmann


The paper of L. Rubinovich and M. Polak [Eur. Phys. J. B 22, 267 (2001)] contains some controversial items. The notation “excess” in connection with various thermodynamic quantities describing solute segregation on the basis of the Langmuir-McLean isotherm is used in a meaning contradictory to general thermodynamics. The approach used to interpret the linear relationship between segregation entropy and enthalpy results in rather strange conclusions. These items are discussed, and it is shown how a formulation with standard terms is in accordance with general thermodynamics.

PACS. 05.70.Np Interface and surface thermodynamics – 75.50.Bb Fe and its alloys – 64.75.+g Solubility, segregation, and mixing; phase separation 


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Copyright information

© EDP Sciences, Springer-Verlag 2003

Authors and Affiliations

  • P. Lejček
    • 1
  • S. Hofmann
    • 2
  1. 1.Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Praha 8, Czech RepublicCZ
  2. 2.Max-Planck-Institute for Metals Research, Heisenbergstr. 3, 70569 Stuttgart, Germany[3mm]DE

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