The grain-boundary diffusion of 67Ga in polycrystalline Mg was measured by using the residual activity method at 639 to 872K. An approximate evaluation procedure was proposed to calculate both the volume diffusion coefficient and the grain-boundary diffusivity, sδDb.

Grain Boundary Diffusion of 67Ga in Polycrystalline Magnesium. I.Stloukal, J.Cermak: Scripta Materialia, 2003, 49[6], 557-62