Corrosion inhibition of carbon steel in acidic medium using azo chromotropic acid dye compound

Mabrouk, E.M.; Eid, S.; Attia, M.M.

doi:10.21608/jbes.2017.369737

Corrosion inhibition of carbon steel in acidic medium using azo chromotropic acid dye compound

Document Type : Original Article

Authors

¹ Department of Chemistry, Faculty of Science, Benha University, P.O. Box 13518, Benha, Egypt

² a Department of Chemistry, Faculty of Science, Benha University, P.O. Box 13518, Benha, Egypt b Department of Chemistry, College of Science and Arts, Alqurayat, Aljouf University, P.O. Box 75911, Alqurayat, KSA

10.21608/jbes.2017.369737

Abstract

Corrosion inhibition effect of Azo dye compound based on chromotropic acid has been studied on carbon steel corrosion in
0.5M sulfuric acid solution using potentiodynamic polarization and weight loss techniques. The result showed that the
studied azo dye is good corrosion inhibitor. The inhibition efficiency of the studied azo dye increases with increase in
concentration, and decreases with increase in temperature. The morphology of the surface and the adsorption isotherm were
studied. The values of thermodynamic parameters were computed and expounded.

Keywords