Surface concentration profile and surface energy in binary alloys
Document Type
Article
Publication Date
5-1-1980
Department
Department of Materials Science and Engineering
Abstract
An improved formulation for the orientation-dependence of multi-layer surface segregation is developed in terms of bond enthalpy and strain energy minimization. Inclusion of this result in the Gibbs adsorption isotherm yields the surface energy. Sample calculations of the surface energy isotherm for solid AuCu and liquid CuNi alloys are in good agreement with published experimental data. The conditions for the existence of an extremum in the surface energy isotherm, originally derived by Defay et al. from a monolayer model, are re-examined on the basis of a multi-layer model. Their results are found applicable to this more general situation in the absence of strain energy. An orientation-dependence of the extremum surface energy, but not of the composition at which the extremum surface energy occurs, is demonstrated.
Publication Title
Surface Science
Recommended Citation
Lee, Y.,
&
Aaronson, H.
(1980).
Surface concentration profile and surface energy in binary alloys.
Surface Science,
95(1), 227-244.
http://doi.org/10.1016/0039-6028(80)90138-7
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5504