Titre :

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

Auteur(s) :

Nadi, Imane [Auteur]
Bouanis, Marya [Auteur]
Nohair, Khadija [Auteur]
Nyassi, Abdelhamid [Auteur]
Zarrouk, Abdelkader [Auteur]
Université Mohammed V de Rabat [Agdal] [UM5]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bentiss, Fouad [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Materials Today Communications

Numéro :

35

Pagination :

106382

Éditeur :

Elsevier BV

Date de publication :

2023-06

ISSN :

2352-4928

Discipline(s) HAL :

Chimie/Matériaux

Résumé en anglais : [en]

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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Date de dépôt :

2023-06-14T11:53:45Z
2023-06-16T09:52:54Z