For the first time, grain boundary diffusion of a solute was measured in a single grain boundary in the C kinetic regime after common Harrison’s classification. The radiotracer technique was used to determine the 110mAg diffusion coefficients in Cu Σ5 (310)[001] bicrystal along and perpendicular to the [001] misorientation axis. The anisotropy of grain boundary diffusion increased slightly with decreasing temperature. However, it remains moderate, within a factor of two to three for the temperature interval studied.

The C-Regime Measurements of Grain Boundary Diffusion of Silver in Copper Σ5 (310) Bicrystal. H.Edelhoff, S.I.Prokofjev, S.V.Divinski: Scripta Materialia, 2011, 64[5], 374-7