The complex interplay of several physical processes in producing changes in the surface and subsurface compositions of ternary alloys during high-temperature ion bombardment has been theoretically investigated, using a phenomenological model that includes Gibbsian adsorption, preferential sputtering, displacement mixing, radiation-enhanced diffusion, and radiation-induced segregation. Sample calculations were performed for an Fe-Cr-Ni solid solution, representative of an austenitic stainless steel, under 3 keV Ne+ sputtering. The effects of the diverse phenomena involved were examined in details as a function of time and temperature. The present model calculations provide useful information about ion-beam modifications, which is important in the areas of sputter depth-profiling of multicomponent materials and elevated-temperature ion implantation.
ASJC Scopus subject areas
- Nuclear and High Energy Physics