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Article dans une revue

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

Abstract :

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.

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https://hal.univ-angers.fr/hal-03247502
Contributeur : Okina Université d'Angers <>
Soumis le : jeudi 3 juin 2021 - 10:17:05
Dernière modification le : vendredi 4 juin 2021 - 03:10:02

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S. Issaadi, Tahar Douadi, A. Zouaoui, Salah Chafaa, Mustayeen Ahmed Khan, et al.. Novel thiophene symmetrical Schiff base compounds as corrosion inhibitor for mild steel in acidic media. Corrosion Science, Elsevier, 2011, 53 (4), pp.1484 - 1488. ⟨10.1016/j.corsci.2011.01.022⟩. ⟨hal-03247502⟩

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