Devanathan and Stachurski

The type of apparatus described here has been used by many workers since the early 1900s, but was not used much until the work of Devanathan and Stachurski emphasized its potential in the early 1960s. The principle is quite simple and is illustrated in Fig. 25. Two electrochemical cells are separated by a metallic membrane, which acts as the working electrode in each of the cells. 

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)... 

In the early potentiostatic experiments by Devanathan and Stachurski [98], the time required for the subsurface concentration to become constant, as assumed, was treated simply as a shift in the timescale at the beginning of a permeation curve. However, the permeation behavior for the constant concentration case and that in which the... 

The permeation method has been widely used in studies of hydrogen diffusion, both with and without trapping considered in the analysis. It is based on the cell originally described by Devanathan and Stachurski. The metal or alloy of interest is... 

Devanathan MAV, Stachurski Z (1962) Adsorption and diffusion of electrolytic hydrogen in palladium. Proc Roy Soc Lond A 270 90-110 Dexter SC (1993) Role of microfouling organisms in marine corrosion. Biofouling 7 97-127... 

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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