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

Massimiliano Bestetti, Silvia Franz, Mazdak I. Hashempour, Antonello Vicenzo

Результат исследования: Материалы для журналаСтатья

Аннотация

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.

Язык оригиналаАнглийский
Страницы (с... по...)673-679
Количество страниц7
ЖурналProtection of Metals and Physical Chemistry of Surfaces
Том54
Номер выпуска4
DOI
Статус публикацииОпубликовано - 1 июл 2018

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ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Organic Chemistry
  • Metals and Alloys
  • Materials Chemistry

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