Macroscopic diffusion coefficients were determined in various Nb-V alloys (figures 15 and 16), at temperatures of between 273 and 550K, and in Nb0.9V0.1 at 300K (for H contents which ranged from 0.001 to 0.033). An expected highly non-linear concentration-dependence of H diffusion in Nb0.9V0.1 at 300K was confirmed here experimentally.

Diffusion of Hydrogen in Disordered Nb1-yVy Alloys. R.C.Brouwer, R.Griessen: Europhysics Letters, 1991, 14[8], 803-7