Calculation of Uniform Corrosion Current Density of Iron in Hydrochloric Acid Solutions based on the Principle of Maximum Entropy Production Rate Applied to Literature Data


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In this paper a new procedure for the calculation of uniform corrosion current density is presented. The procedure is based on the following criterion: corrosion current and extent of anodic and cathodic areas are such that the entropy production rate is maximum. Experimental data for the reaction Fe(s) + HCl(aq) = FeCl2(aq) + H2(g), taken from literature, are used to test the new model. A comparison between corrosion current density calculated from weight loss measurements and current density calculated from polarization curves by means of the proposed model is carried out. The proposed model provides a better agreement, between Tafel line extrapolation and gravimetric measurement, in comparison to the mixed potential theory usually adopted.

作者简介

Massimiliano Bestetti

Politecnico di Milano Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”; Department of Experimental Physics

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Email: massimiliano.bestetti@polimi.it
意大利, Milano, 20131; Tomsk, 634050

Silvia Franz

Politecnico di Milano Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”

Email: massimiliano.bestetti@polimi.it
意大利, Milano, 20131

Mazdak Hashempour

Politecnico di Milano Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”

Email: massimiliano.bestetti@polimi.it
意大利, Milano, 20131

Antonello Vicenzo

Politecnico di Milano Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”

Email: massimiliano.bestetti@polimi.it
意大利, Milano, 20131

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