Devanathan—Stachurski permeation technique

The electrochemical hydrogen permeation technique has proved to be a valuable tool in the study of these reaction mechanisms. This is mainly due to the ability to estimate the amount of an intermediate (Hads) in the reaction scheme. Such studies have been presented, for example, by Devanathan and Stachurski, by Bockris et and by Iyer et The applicability of the Volmer-Tafel reaction scheme can be evaluated by considering the kinetic expressions for reactions (22) and (23), together with equilibrium in the absorption process (25)... 

Evaluation of hydrogen absorption and permeation provides valuable information on the hydrogen evolution and hydrogen embrittlement mechanism. Devanathan-Stachurski [5,6] developed a technique to measure hydrogen permeation though metallic membranes. This technique is based on the assumption that the following conditions are established at each surface of the membrane under potentiostatic control ... 

E8.1. Values of the hydrogen cathodic current density, and steady state hydrogen permeation current, joo. a function of the overpotential, ij, measured using the Devanathan-Stachurski technique are given in Table E8.1. 

The resistance to hydrogen permeation in Cd deposited on steel was evaluated by using the Devanathan-Stachurski technique. The hydrogen evolution current, and the permeation current,7oo. were measured as a ffinction of overpotential and are hsted in Table E8.3. 

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