Tracer sectioning was used to study the diffusion of 14C in Armco Fe (0.025wt%C). The results could be described by:

D (cm2/s) = 3.22 x 10-2 exp[-19.1(kcal/mol)/RT]

S.V.Zemskii, D.A.Litvinenko, V.I.Grigorkin, T.V.Kharchikova: Izvestiya Vysshikh Uchebnykh Zavedenii Chernaya Metallurgiya, 1973, 6, 93-6