Eur. Phys. J. Appl. Phys.
Volume 93, Number 2, February 2021
Advanced Materials for Energy Harvesting, Storage, Sensing and Environmental Engineering (ICOME 2019)
|Number of page(s)||12|
|Section||Surfaces and Interfaces|
|Published online||08 February 2021|
An experimental and theoretical correlation of inhibition effect of some dihydropyridine on mild steel in 1 M HCL★
Laboratoire de Chimie Physique des Matériaux LCPM, Faculté des Sciences Ben M’sik, B. P. 7955, Bd Cdt Driss El Harti, Université Hassan II de Casablanca, Casablanca, Morocco
2 Centre Régional des métiers d'éducation et de formation Casablanca Anfa, Bd Bir Anzarane, Casablanca, Morocco
* e-mail: email@example.com
Received in final form: 17 December 2020
Accepted: 4 January 2021
Published online: 8 February 2021
The corrosion inhibition of mild steel in 1 M HCl solution by some dihydropyridine has been studied using gravimetric, electrochemical impedance spectroscopy, potentiodynamic polarization techniques and quantum chemical study. The results of weight loss and Tafel polarization measurements showed that among the studied compounds, Isradipine has good inhibiting properties for steel corrosion in acidic bath, with 98% inhibition efficiency at optimum concentration 400 ppm. The inhibition is of a mixed anodic–cathodic nature. The adsorption behaviour of the investigated compounds is found to obey Langmuir adsorption isotherm. Quantum chemical parameters were correlated with the experimental results.
© EDP Sciences, 2021
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