The heterodiffusion of 60Co in polycrystalline Marz-type material was studied by using a serial sectioning technique. At 933 to 1323K, the results could be described by:

D (m3/s) = 5.1 x 10-15 exp[-120(kJ/mol)/RT]

At 673 to 933K, the results were described by:

D (m3/s) = 1.3 x 10-11 exp[-174(kJ/mol)/RT]

J.Cermak: Physica Status Solidi A, 1990, 117[2], 387-93