An investigation was made of the thermotransport of H by subjecting a hydrided Ti cylinder to annealing in a temperature gradient. After annealing, the cylinder was cut into sections and each section was analyzed by using hot extraction to determine the H concentration profile. It was found that the activation energy for diffusion in the a-phase, at temperatures of 275 to 650C, was 4.50kcal/mol. The activation energy for diffusion in the ß-phase, at temperatures of 320 to 590C, was 0.63kcal/mol.

A.Sawatzky, M.Duclos: Transactions of the Metallurgical Society of AIME, 1969, 245[4], 831-9