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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.
- Source :
- Protection of Metals & Physical Chemistry of Surfaces; Jul2018, Vol. 54 Issue 4, p673-679, 7p
- Publication Year :
- 2018
-
Abstract
- 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) = FeCl<subscript>2</subscript>(aq) + H<subscript>2</subscript>(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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20702051
- Volume :
- 54
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Protection of Metals & Physical Chemistry of Surfaces
- Publication Type :
- Academic Journal
- Accession number :
- 130896845
- Full Text :
- https://doi.org/10.1134/S2070205118040160