Grain boundary diffusion coefficient

The grain boundary diffusion coefficient is the diffusion coefficient (during atomic diffusion) of a diffusant along a grain boundary in a polycrystalline solid.^[1] At lower temperatures in metals and metal alloys, this diffusion term may dominate the effective diffusion rate.

References

1. P. Heitjans, J. Karger, Ed, “Diffusion in condensed matter: Methods, Materials, Models,” 2nd edition, Birkhauser, 2005, pp. 1-965.

See also

• Kirkendall effect
• Phase transformations in solids
• Mass diffusivity