A study was made of the effect of temperature, upon the saturated H content and diffusion coefficient, by cathodically charging steels in solutions at various temperatures and then estimating the absorbed H by means of vacuum extraction. High-temperature diffusion coefficients were determined by monitoring the out-diffusion of H during vacuum extraction, at temperatures ranging from 250 to 550C, from steels which had been saturated at 25C. The results indicate that, at a given temperature, the lattice H was essentially independent of the steel composition.

J.F.Newman, L.L.Shreir: Corrosion Science, 1971, 11[1], 25-33