An improved method, based on Whipple’s exact solution, for obtaining accurate grain-boundary diffusion coefficients from shallow solute concentration gradients.

Presents information on a study that used an equation developed by Le Claire to obtain a grain-boundary diffusion product from the measured solute concentration gradients produced under conditions of constant surface concentration in grain-boundary diffusion experiments. Whipple's solution for the solute distribution in a grain-boundary diffusion experiment; Analysis of the gradients produced by out-diffusion.