Effect of curvature and stress on reaction rates at solid interfaces

Abstract

We analyze the effect of interface curvature and stress on reaction rates at solid-solid or solid-fluid interfaces. Curvature affects the forward and reverse reactions differently, and cannot be related simply to an interface energy. To describe the effect of stress requires at least two parameters each for forward and reverse reactions. The distribution of local configurations may be ignored to linear order; but beyond the linear regime, this effect can cause large deviations from the expected exponential dependence. © 1998 American Institute of Physics.