1. Theoretical and experimental studies of a new aniline derivative corrosion inhibitor for mild steel in acid medium.
- Author
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Fernandes, Caio Machado, Mello, Marcos Vinícius Palmeira, dos Santos, Nazir Escarpini, Souza, Alessandra Mendonça Teles, Lanznaster, Mauricio, and Ponzio, Eduardo Ariel
- Subjects
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MILD steel , *ANILINE derivatives , *CORROSION & anti-corrosives , *SCANNING force microscopy , *ATOMIC force microscopy , *POLYANILINES , *BENZOTRIAZOLE derivatives - Abstract
4‐Chloro‐N‐(pyridin‐2‐ylmethyl)aniline (CPYA) was synthesized by a simple and inexpensive method and tested as a corrosion inhibitor in acid medium for mild steel by using gravimetric studies and electrochemical measurements. An average maximum efficiency of 96.0% was achieved at 4.59 mmol/L. Corrosion kinetic and thermodynamic parameters were also analyzed. Surface analyses (atomic force microscopy and scanning electron microscopy) show that protection is enabled by adsorption on the metal, forming a film. Quantum chemical calculations were performed to access information regarding the molecular structure in the corrosive medium and to support interpretation of the results obtained by experimental methods. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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