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) = 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.
| Original language | English |
|---|---|
| Pages (from-to) | 673-679 |
| Number of pages | 7 |
| Journal | Protection of Metals and Physical Chemistry of Surfaces |
| Volume | 54 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jul 2018 |
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Keywords
- corrosion current density
- entropy production rate
- exchange current density
- Tafel slope
- uniform corrosion
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Organic Chemistry
- Metals and Alloys
- Materials Chemistry
Cite this
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. / Bestetti, Massimiliano; Franz, Silvia; Hashempour, Mazdak I.; Vicenzo, Antonello.
In: Protection of Metals and Physical Chemistry of Surfaces, Vol. 54, No. 4, 01.07.2018, p. 673-679.Research output: Contribution to journal › Article
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TY - JOUR
T1 - 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
AU - Bestetti, Massimiliano
AU - Franz, Silvia
AU - Hashempour, Mazdak I.
AU - Vicenzo, Antonello
PY - 2018/7/1
Y1 - 2018/7/1
N2 - 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.
AB - 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.
KW - corrosion current density
KW - entropy production rate
KW - exchange current density
KW - Tafel slope
KW - uniform corrosion
UR - http://www.scopus.com/inward/record.url?scp=85050563935&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85050563935&partnerID=8YFLogxK
U2 - 10.1134/S2070205118040160
DO - 10.1134/S2070205118040160
M3 - Article
VL - 54
SP - 673
EP - 679
JO - Protection of Metals and Physical Chemistry of Surfaces
JF - Protection of Metals and Physical Chemistry of Surfaces
SN - 2070-206X
IS - 4
ER -