ANALYSIS OF A TRAPPING MODEL FOR THE DIFFUSION OF HYDROGEN IN METALS.

Abstract

An analysis of the apparent diffusivity of hydrogen in mixed trap and multiple physical trap models was carried out based on the assumption of a system of low occupation probability of hydrogen in normal lattice and trapping sites, by taking into consideration that the trapping sites have not only characteristic trap density and depth but also a trap width and that normal lattice sites and individual traps have characteristic trapping and release rates.