The diffusion of 95Zr in 5N-purity material was studied at 531 to 640C. The results could be described by:

D (cm2/s) = 7.28 x 102 exp[-57.8(kcal/mol)/RT]

T.Marumo, S.Fujikawa, K.Hirano: Journal of the Japan Institute of Light Metals, 1973, 23[2], 17-25