A method for the determination of grain boundary diffusion parameters during the A-regime of intermetallic layer formation was suggested. Experimental data on Zn8Cu5 growth kinetics were used to demonstrate the separate determination of the volume-diffusion activation enthalpy and the grain-boundary activation enthalpy.

Grain Boundary Diffusion Parameters Determination using A-Kinetics of Intermetallic Layer Formation. M.V.Yarmolenko: Solid State Phenomena, 2000, 72, 251-4