The Kirkendall Effect in Multiphase Interdiffusion

Abstract

The Kirkendall effect mediated migration of inert inclusions during multiphase diffusion can be rationalized using a Kirkendall velocity construction. It is demonstrated that the Kirkendall plane locations inside the diffusion zone can be identified by grain morphology changes within the microstructure of the reaction products. The latter is the result of different nucleation processes at both sides of the Kirkendall plane.