INVESTIGATION OF THE INHIBITIVE EFFECT OF PYRAZOLO [3, 4-B] PYRIDINE ON CORROSION OF STAINLESS STEEL IN 1 M HCl SOLUTIONS
M. A. EL MHAMMEDI1, FADEL S. 2, CHTAINI A. 1*, E. M. RAKIB2, KHOUILI M. 2 1 LABORATOIRE D’ELECTROCHIMIE ET DE BIO CORROSION, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP: 523, BENI MELLAL, MAROC 2 LABORATOIRE DE CHIMIE ORGANIQUE ET ANALYTIQUE, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP: 523, BE
The purpose of this study to investigate the effect of pyrazolo [3-4-b] pyridine on the corrosion inhibition of stainless steel in 1.0M hydrochloric acid (HCl) by using weight loss method, potentiodynamic polarization methods, and electrochemical impedance spectroscopy. It was found that the adsorption of inhibitor could prevent steel from weight loss and the adsorption accorded with the Langmuir adsorption, the corrosion protection could be explained by the adsorption of inhibitor and formation of a protective layer attached to the metal surface.
