This work presents a fully physical model of the hydrogen diffusion and
trapping kinetics in metals, integrating permeation and thermal desorption
within a unified framework. Based on the McNabb and Foster approach, it
requires only binding energy and number density of trap sites. It correctly
reproduces the physics of the system and the results of the analytical
solutions of the permeation kinetics. It is also capable of reproducing thermal
desorption spectra with considerable accuracy. The sensitivity analysis has
elucidated the relationships among the processing conditions and the parameters
commonly used to characterize permeation and thermal desorption experiments. An
equation empirically derived from the simulation results, expressing the
dependence of time lag in desorption on specimen thickness, number density of
occupied trap sites, and cathodic concentration, is proposed. In summary, IL
model represents a valuable tool in supporting the interpretation and
rationalization of experiments also from a quantitative viewpoint.

Questo articolo esplora i giri e le loro implicazioni.

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