Effect of surface layers on diffusion processes and the resulting stress state in solids

Generalized boundary conditions are formulated making it possible to take into account the influence of interfaces, grain boundaries and other discontinuities of the surface type on diffusion phenomena. Using these conditions, the authors find a solution of the problem of determining the concentration field and stress state during diffusion saturation of an elastic half-space through a thin surface coating. For a case when the mass transfer is effected through a local coating region, graphs of the concentration and stress distribution are constructed for various ratios of mass diffusivities of the surface coating and half-space materials.This paper was read at the VI All-Union Conference on diffusion-saturation treatments and surface coatings (Odessa, September 1966).