The heats of transport of D and H were determined, at between 200 and 250C, by using steady-state methods. The D and H contents ranged up to gas/metal atomic ratios of 0.55. The heat of transport at 500K was equal to 0.085eV for H and to 0.156eV for D. It was suggested that there was a relationship between the heat of transport and the content or atomic mass. It was proposed that an intrinsic thermotransport mechanism played a predominant role.

H and D Diffusion in V and Nb in the Presence of a Temperature Gradient. A.Bauberger, H.Wipf: Physica Status Solidi A, 1985, 89[1], 123-32

Figure 15

Diffusivity of H in Nb-V

(open squares: Nb0.11V0.89, filled squares: Nb0.25V0.75, circles: Nb0.50V0.50)