The diffusion coefficients were measured at 489 to 774K. The 16O was injected by ion implantation. The diffusion penetration profiles were then measured by exploiting the 16O(d,p)17*O nuclear reaction. The temperature dependence of the O diffusivity in V-5at%Ti was described by:

D(m2/s) = 3.1 x 10-4 exp[-171.8(kJ/mol)/RT]

The diffusivity in V-5Ti was about 2 orders of magnitude lower than that in V. It was concluded that this was evidence for a trapping effect due to Ti, and the binding energy was estimated to be about 52kJ/mol.

H.Nakajima, S.Nagata, H.Matsui, S.Yamaguchi: Philosophical Magazine A, 1993, 67[3], 557-71