Grain-boundary grooving methods were used to investigate surface self-diffusion at 780 to 1070C. It was found that the results could be described by:

D (cm2/s) = 4.3 x 101 exp[-36.1(kcal/mol)/RT]

S.R.Srinivasan, R.Trivedi: Acta Metallurgica, 1973, 21[5], 611-20