INVESTIGATION OF THE INHIBITIVE EFFECT OF PYRAZOLO [3, 4-B] PYRIDINE ON CORROSION OF STAINLESS STEEL IN 1 M HCl SOLUTIONS

M.A. EL MHAMMEDI
LABORATOIRE D’ELECTROCHIMIE ET DE BIO CORROSION, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP: 523, BENI MELLAL, MAROC
FADEL S.
LABORATOIRE DE CHIMIE ORGANIQUE ET ANALYTIQUE, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD
CHTAINI A.
LABORATOIRE D’ELECTROCHIMIE ET DE BIO CORROSION, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP: 523, BENI MELLAL, MAROC
E.M. RAKIB
LABORATOIRE DE CHIMIE ORGANIQUE ET ANALYTIQUE, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD
KHOUILI M.
LABORATOIRE DE CHIMIE ORGANIQUE ET ANALYTIQUE, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD

Abstract

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.

Cuvinte cheie

pyrazolo [3-4-b] pyridine corrosion inhibition adsorption stainless steel