Corrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings / Asmaa R. Heiba in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 501-510 Titre : Corrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings Type de document : texte imprimé Auteurs : Asmaa R. Heiba, Auteur ; Fatma A. Taher, Auteur ; Rabab M. Abou Shahba, Auteur ; Nabil A. Abdel Ghany, Auteur Année de publication : 2021 Article en page(s) : p. 501-510 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone Anticorrosion Caractérisation Dépôt électrophorétique Métaux -- Revêtements protecteurs Oxyde de graphène Index. décimale : 667.9 Revêtements et enduits Résumé : In the modern metal finishing industry, corrosion protection plays a critical role, with many coatings created to prevent this phenomenon (corrosion) and protect the metals. Nano-coating has of late been used to develop corrosion-resistant metal composites. Recently, layers of graphene-based materials with extraordinary properties have been successfully manufactured and applied through electrophoretic deposition (EPD). This article summarizes work altering the graphene oxide (GO) content, which was prepared using an adapted Hummers' method and then the simultaneous reduction of the GO suspension by the EPD method into graphene nano-coating on carbon steel. Different parameters were optimized, namely applied voltage, deposition time, and GO concentration. Scanning electron microscopy and X-ray diffraction were used to characterize the coatings. The corrosion resistance of these coatings was measured by electrochemical polarization in aqueous solutions under accelerated corrosion conditions. The results show not only that EPD is a simple technique that allows creating a graphene coat on carbon steel from GO suspension, but also that it forms a graphene nano-coating which provides significant protection against corrosion of steel in acidic and salty solutions. Note de contenu : - EXPERIMENTAL : Materials and solutions - Synthesis of GO - Electrophoretic deposition (EPD) of GO - Electrochemical corrosion test - Characterizations - RESULTS AND DISCUSSION : Characterization of synthesized GO - Electrophoretic deposition parameters - CORROSION STUDIES : Weight loss technique - Potentiodynamic polarization technique - Surface examination by scanning electron microscopy (SEM) - Table 1 : The chemical composition of carbon steel electrode used for the present study - Table 2 : Corrosion parameters obtained from potentiodynamic polarization of uncoated and coated C-steel electrodes at different conditions at 25°C DOI : https://doi.org/10.1007/s11998-020-00419-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00419-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35610 [article]

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