The migration of V in 3N89-purity samples was studied at 880 to 1833C. The self-diffusion coefficient was found to be described by:

880-1356C:     D (cm2/s) = 3.0 x 10-1 exp[-73.65(kcal/mol)/RT]

1356-1833C:     D (cm2/s) = 2.14 x 102 exp[-94.14(kcal/mol)/RT]

R.F.Peart: Journal of the Physics and Chemistry of Solids, 1965, 26, 1853