Models of recrystallization activated by a diffusion flow of impurities from a thin-film coating with a convection term at the crystal surface: exact solutions

Two models of recrystallization are proposed taking into account the convective flux impurity exchange between polycrystalline and thin-film coating. The special boundary modes described by single-phase two-phase Stefan problems with condition at coated surface containing term. exact solutions formulated corresponding to grain-boundary concentration impurities obtained. detail theoretical analysis focused on third type problem shows that width recrystallized layer increase an in annealing time. An intensity coating promotes layer. front position increases it decreases from surface. rate kinetics