Diffusion and permeation of hydrogen in low-activation martensitic stainless steel – effect of irradiation

The effect of irradiation on permeation and diffusion of hydrogen in low-activation martensitic stainless steel, F82H-mod, was investigated in three experiments:1. tion and diffusion of H2 in pre-irradiated specimens, showing decrease of both the properties with increasing dose. The diffusion results were evaluated in terms of a saturable-trap-model. tion of deuterium under simultaneous proton irradiation, showing enhancement of permeation by irradiation. ion of protons which were implanted to various depths in a 800 μm foil. These results were compared to H2 gas diffusion in virgin and pre-irradiated material.