Experimental study and mathematical modeling of the corrosion inhibition of mild steel with an organic compound in 1 M HCl

Original scientific paper

  • Wafia Boukhedena Department of Science Materials, Larbi Tebessi University, 12002 Tebessa, Algeria and Mines Laboratory, Larbi Tebessi University, 12002 Tebessa, Algeria https://orcid.org/0000-0002-2372-0719
  • Samir Deghboudj Department of Mechanics, Larbi Tebessi University, 12002 Tebessa, Algeria and Mines Laboratory, Larbi Tebessi University, 12002 Tebessa, Algeria https://orcid.org/0000-0002-2372-0719
Keywords: ketene dithioacetal, hydrochloric acid, gravimetric measurements, linear regression, quadratic regression
Graphical Abstract


In this paper, a synthesized organic compound from the family of ketene dithioacetal was studied as corrosion inhibitor for mild steel in 1.0 M hydrochloric acid by gravimetric measurements. The aim of this work is to study the effect of inhibitor concentration and temperature on the corrosion resistance, and to compare the experimental results with those obtained by mathematical models. The structural properties are characterized using the scanning electron microscopy technique. It has been found that the inhibition efficiency increases with increasing inhibitor concentration. The adsorption of studied compound on mild steel surface follows Langmuir’s isotherm. Taking into account the influence of inhibitor concentration and temperature on the corrosion inhibition efficiency, obtained data were analyzed by two mathematical models based on linear and quadratic regression. The obtained experimental results are in a good agreement with those predicted by the quadratic regression models.


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