The diffusion of N was studied at 900 to 1300C. The results could be described by:

D (cm2/s) = 2.3 x 10-3 exp[-24.9(kcal/mol)/RT]

T.O.Ogurtani, E.M.Uygur: Transactions of the Japan Institute of Metals, 1972, 13[6], 396-9

The best linear fits to the solute diffusion data ([1015] to [1019], [1021] to [1030]) yield:

H: Ln[Do] = 0.55E – 9.4 (R2 = 0.92); N: Ln[Do] = 0.23E – 12.2 (R2 = 0.73);

Nb: Ln[Do] = 0.20E – 19.4 (R2 = 0.94)