Corrosion protection performance of nanocomposite coatings under static, UV, and dynamic conditions / Y. A. Basiru in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 5 (09/2018) . - p. 1035-1047 Titre : Corrosion protection performance of nanocomposite coatings under static, UV, and dynamic conditions Type de document : texte imprimé Auteurs : Y. A. Basiru, Auteur ; Sh. Ammar, Auteur ; K. Ramesh ; B. Vengadaesvaran ; S. Ramesh ; A. K. Arof Année de publication : 2018 Article en page(s) : p. 1035-1047 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Corrosion Matériaux hybrides Photodétérioration Revêtements -- Effets du rayonnement ultraviolet Revêtements organiques Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : Silicone-modified epoxy polymeric matrix was successfully fabricated and reinforced with 1–2 wt% SiO2, TiO2, and TiSiO4 nanoparticles. Fourier-transform infrared spectroscopy, contact angle measurements, differential scanning calorimetry, and field-emission scanning electron microscopy together with energy-dispersive X-ray spectroscopy were employed to investigate different characteristics of the prepared coatings. To simulate operating conditions, all samples were characterized via electrochemical impedance spectroscopy (EIS) after being subjected to different conditions. Corrosion under static conditions, in which the samples were exposed to a static electrolyte without further change in other parameters, was investigated. Furthermore, to study the effects of ultraviolet (UV) radiation in accelerating the degradation of the coatings, samples were characterized after being subjected to UV while immersed statically in the electrolyte. Additionally, the corrosion protection performance was investigated after subjecting the coated substrates to dynamic conditions involving continuous movement of the sample in the electrolyte, simulating continuous wear of the coated surfaces. Compared with the static condition, the EIS results revealed the vital role of the silicone resin and nanoparticles in improving the stability of the coating film against corrosion degradation in the presence of UV radiation, while poor performance in dynamic condition was recorded for all the coating systems. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Materials - Coating preparation - CHARACTERIZATION : Fourier-transform infrared (FTIR) spectroscopy - Contact angle (CA) measurements - Differential scanning calorimetry (DSC) - Surface morphology analysis - Electrochemical impedance spectroscopy ( EIS) - RESULTS AND DISCUSSION : Fourier-transform infrared (FTIR) spectroscopy - Contact angle (CA) measurements - Differential scanning calorimetry (DSC) - Surface morphology - Electrochemical impedance spectroscopy (EIS) - Static condition - Ultraviolet (UV) condition - Dynamic testing - Assessment of EIS results in static, UV, and dynamic conditions DOI : 10.1007/s11998-017-0038-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0038-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31127 [article]

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