The diffusive behavior of N in 3N-purity material was studied at 1350 to 1700C. The results could be described by:

α-phase:     D (cm2/s) = 3.0 x 10-1 exp[-57.0(kcal/mol)/RT]

δ-phase:     D (cm2/s) = 6.0 x 10-2 exp[-60.0(kcal/g-atom)/RT]

V.S.Eremeev, Y.M.Ivanov, A.S.Panov: Izvestiya Akademii Nauk SSSR, 1969, 4, 262-7