The tracer diffusion of H in body-centered cubic TiHx phases with x-values of 0.57 and 0.70 was measured at 620 to 830K by using the nuclear magnetic resonance pulsed field gradient spin-echo technique. It was found that the results could be described by:

x = 0.57:     D (cm2/s) = 7.8 x 10-4 exp[-0.16(eV)/kT]

x = 0.70:     D (cm2/s) = 6.3 x 10-4 exp[-0.15(eV)/kT]

F.H.Sevilla, R.M.Cotts: Journal of the Less-Common Metals, 1987, 129, 223-8