Surface segregation kinetics were measured using Auger electron spectroscopy and the results were used to deduce the bulk diffusivity (table 19). It was pointed out that, whereas in some cases it was possible to apply simple analytical solutions to Fick’s equation, complications arose in other cases due to the presence of an appreciable solute concentration at the surface.A.Rolland, J.Bernardini: Scripta Metallurgica, 1985, 19[7], 839-42