The diffusivity of N was determined at 500 to 1150C by using a microbalance. The N diffusivities could be described by:

α-Fe:     D (cm2/s) = 1.5 x 10-2 exp[-19.1(kcal/mol)/RT]

γ-Fe:     D (cm2/s) = 2.0 x 10-1 exp[-36.0(kcal/mol)/RT]

K.Bohnekamp: Archiv für Eisenhüttenwesen, 1967, 38[3], 229-32