(Solved): (10 pts) 2. The following data describe the diffusion of a substitutional impurity atom in a polycr ...

(10 pts) 2. The following data describe the diffusion of a substitutional impurity atom in a polycrystalline solid. Each data set below (A, B, and C) is associated with a characteristic diffusion environment for the impurity atom. The possible diffusion environments are: surface diffusion, volume diffusion, grain boundary diffusion. Based on your understanding of solid-state diffusion mechanisms and processes, name the diffusion environment most likely associated with each data set: C $A?$ $AB?$ (1)