Elaboration and corrosion resistance of self-assembled 2,5-bis(4-pyridyl)-1,3,4-oxadiazole film on carbon steel: Surface characterisations, electrochemical assessments and surface pre-treatment effect - Université de Lille Accéder directement au contenu
Article Dans Une Revue Materials Today Communications Année : 2023

Elaboration and corrosion resistance of self-assembled 2,5-bis(4-pyridyl)-1,3,4-oxadiazole film on carbon steel: Surface characterisations, electrochemical assessments and surface pre-treatment effect

Résumé

The self-assembled monolayers (SAMs) of 2,5-bis(4-pyridyl)− 1,3,4-oxadiazole (4-POX) were formed on carbon steel (CS) surface to improve the corrosion resistance of the substrate in 1 M HCl medium. The structural characterisations of 4-POX/SAMs films were performed by using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Scanning Electron Microscopy (SEM), and contact angle measurements. The protection ability of SAM films against CS-substrate corrosion in 1 M HCl was studied using potentiodynamic polarization and AC impedance techniques. FTIR and XPS results showed that the 4-POX molecules adsorbed on the CS surface, and the contact angle values on the modified surface supported the formation of hydrophobic 4-POX/SAMs. The results of electrochemical measurements indicated, when the self-assembling time increased, the corrosion resistance od 4-POX/SAMs film enhaced, reaching a maximum protection efficiency value of 94.6% for 6 h of self-assembly. Different kinds of surface pre-treatments (amorphous phosphatation (Pa), APTES (PAPTES), and N2 plasma (PN2)) of CS-substrate were then applied in order to improve the corrosion resistance of SAM process.

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Matériaux
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Dates et versions

hal-04130920 , version 1 (16-06-2023)

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Imane Nadi, Marya Bouanis, Khadija Nohair, Abdelhamid Nyassi, Abdelkader Zarrouk, et al.. Elaboration and corrosion resistance of self-assembled 2,5-bis(4-pyridyl)-1,3,4-oxadiazole film on carbon steel: Surface characterisations, electrochemical assessments and surface pre-treatment effect. Materials Today Communications, 2023, Materials Today Communications, 35, pp.106382. ⟨10.1016/j.mtcomm.2023.106382⟩. ⟨hal-04130920⟩
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