Title :

A new approach in modifying ethylene glycol methacrylate phosphate coating formulation by adding sodium montmorillonite to increase corrosion resistance properties

Author(s) :

Farahi, Abdelfettah [Auteur]
Université Ibn Zohr = Ibn Zohr University [Agadir]
Bentiss, Fouad [Auteur]
Faculty of Science - Chouaib Doukkali University
Laboratoire de Catalyse et Corrosion des Matériaux [LCCM]
Jama, Charafeddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
El Mhammedi, Moulay Abderrahim [Auteur]
Université Hassan 1er [Settat]
Bakasse, Mina [Auteur]
Université Chouaib Doukkali [UCD]

Journal title :

Journal of Alloys and Compounds

Volume number :

723

Pages :

1032-1038

Publication date :

2017-11-05

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

In this work, the corrosion inhibition property of the ethylene glycol methacrylate phosphate (EGMAP) and the polymerized EGMAP also incorporated with sodium montmorillonite (Na+Mt) has been studied. The corrosion inhibition ...
Show more >In this work, the corrosion inhibition property of the ethylene glycol methacrylate phosphate (EGMAP) and the polymerized EGMAP also incorporated with sodium montmorillonite (Na+Mt) has been studied. The corrosion inhibition of carbon steel in 1.0 M HCl solution was investigated using electrochemical impedance spectroscopy (EIS) measurements. Data obtained were analyzed to be modeled through appropriate equivalent circuit models. EGMAP is used as the corrosion inhibitor in acidic media, even at very low concentration, the inhibition efficiency increases with concentration and can reach a limiting value (82%) with a concentration of 1.0 × 10−2 mol L−1 of the inhibitor after 48 h of immersion time. The adsorption of EGMAP on the carbon steel surface obeys to the Langmuir's adsorption isotherm. The calculated ΔG°ads value show that the corrosion inhibition of the carbon steel in 1.0 M HCl is mainly controlled by a physisorption process. The polymerization kinetics of EGMAP is favorised under UV-light, by creating highly crosslinked polymerized chains leading to complete conversion degree of the C═C bonds to C─C reached 95% in 45 min. The protective power of this inhibitor also increases in the case of polymerized inhibitor by 80%. The addition of clay in the coating formulation lead to a significant improvement, reaching an inhibitory value of 98%, explained by the adsorption of clay on the surface of the steel. Both formulations present a very advantageous stability of adsorbed layers.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-05-17T09:11:25Z
2024-06-18T09:04:22Z