The diffusive behavior of Zr was studied at 1582 to 2084C. The results could be described by:

D (cm2/s) = 4.7 x 10-1 exp[-87.0(kcal/mol)/RT]

F.Roux, A.Vignes: Revue de Physique Appliquée, 1970, 5[3], 393-405