Novel thiophene symmetrical Schiff base compounds as corrosion inhibitor for mild steel in acidic media

TitreNovel thiophene symmetrical Schiff base compounds as corrosion inhibitor for mild steel in acidic media
Type de publicationArticle de revue
AuteurIssaadi, S., Douadi, Tahar, Zouaoui, A., Chafaa, Salah , Khan, Mustayeen Ahmed , Bouet, Gilles
TypeArticle scientifique dans une revue à comité de lecture
Année2011
Date2011/04
Numéro4
Pagination1484 - 1488
Volume53
Titre de la revueCorrosion Science
ISSN0010-938X
Mots-clésCorrosion, Hydrochloric acid, Inhibitor, Mild steel, Schiff base
Résumé en anglais

The inhibiting effect of two Schiff bases on the corrosion of the mild steel (MS) in 1 M HCl has been studied by electrochemical impedance spectroscopy (EIS) and Tafel polarisation measurements. The Schiff bases, 4,4′-bis(3-carboxaldehyde thiophene) diphenyl diimino ether (L1) and 4,4′-bis(3-carboxaldehyde thiophene) diphenyl diimino ethane (L2), were synthesized using 3-carboxaldehydethiophene and its corresponding amine. Polarisation curves reveal that both compounds are mixed type (cathodic/anodic) inhibitors and inhibition efficiency (% IE) increases with increasing concentration of compounds. It is suggested that their effects depend on their concentrations and the molecular structures. Adsorption of compounds on mild steel surface is spontaneous and obeys Langmuir’s isotherm.

URL de la noticehttp://okina.univ-angers.fr/publications/ua35
DOI10.1016/j.corsci.2011.01.022
Lien vers le document

http://dx.doi.org/10.1016/j.corsci.2011.01.022