Grain boundary diffusion of 63Ni in pure and boron-doped Ni3Al intermetallic was studied at temperatures 833 and 893K using the residual activity method. The decrease of the triple product P with increasing boron concentration was observed.

Influence of Boron on Nickel Grain Boundary Self-Diffusion in Ni3Al Intermetallic. Cermák, J., Stloukal, I., Růžičková, J.: Physica Status Solidi A, 1996, 158[1], 35-8