The diffusive behavior of U was studied at 975 to 1075C. The results could be described by:

D (cm2/s) = 1.0 x 100 exp[-56.4(kcal/mol)/RT]

J.P.Zanghi, A.Van Craeynest, D.Calais: Journal of Nuclear Materials, 1971, 39[2], 133-44