Electrochemical permeation and desorption techniques for studying the entry, transport and trapping of H were outlined. These techniques were vulnerable to error and, in order to obtain reliable data, the experimental conditions had to be carefully controlled. As an example, the permeation of H through, and the desorption of H from, cathodically charged Armco Fe membranes were investigated. The analysis of the partial permeation transients and then the analysis of the desorption rate of H from both sides of the membrane enabled determination the lattice diffusivity of H as well as the amounts and distribution of the diffusible and trapped H.

Adaptation of the Electrochemical Permeation Technique for Studying Entry, Transport and Trapping of Hydrogen in Metals. T.Zakroczymski: Electrochimica Acta, 2006, 51[11], 2261-6