Abstract
Short-range order (SRO) effects on surface segregation in solid solutions are considered on the basis of general thermodynamical conditions for surface-bulk equilibrium, combined with a qualitative estimation of SRO-related perturbations in the total free energy as a function of concentration. The SRO effects originate from the preferential attraction of solute atoms to growing compositional fluctuations in the bulk or at the surface, governed by solute-solvent interatomic forces. In comparison to results of Bragg-Williams-type approximations, concentration-dependent suppression or enhancement of segregation levels are predicted.
| Original language | English |
|---|---|
| Pages (from-to) | 1019-1022 |
| Number of pages | 4 |
| Journal | Surface Science |
| Volume | 377-379 |
| DOIs | |
| State | Published - 20 Apr 1997 |
Keywords
- Alloys
- Equilibrium thermodynamics and statistical mechanics
- Surface segregation
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry