Anticorrosive properties of a superhydrophobic coating based on an ORMOSIL enhanced with MCM-41-HDTMS nanoparticles for metals protection / Erik Uc-Fernández in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 1 (01/2023) . - p. 347-357 Titre : Anticorrosive properties of a superhydrophobic coating based on an ORMOSIL enhanced with MCM-41-HDTMS nanoparticles for metals protection Type de document : texte imprimé Auteurs : Erik Uc-Fernández, Auteur ; Jorge González-Sánchez, Auteur ; Alejandro Ávila-Ortega, Auteur ; Yamile Pérez-Padilla, Auteur ; J. Manuel Cervantes-Uc, Auteur ; Javier Reyes-Trujeque, Auteur ; William A. Talavera-Pech, Auteur Année de publication : 2023 Article en page(s) : p. 347-357 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone Analyse quantitative (chimie) Angle de contact Anticorrosifs Anticorrosion Caractérisation Energie de surface Hexadécyltriméthoxysilane Hydrophobie Matériaux mésoporeux Métaux -- Revêtements protecteurs Microscopie Nanoparticules Revêtements organiques Revêtements protecteurs Spectroscopie d'impédance électrochimique Surfaces fonctionnelles Index. décimale : 667.9 Revêtements et enduits Résumé : The anticorrosive properties of hexadecyltrimethoxysilane (HDTMS) functionalized MCM-41 silica particles (MCM-41-HDTMS) incorporated into a methyltriethoxysilane (MTES) sol-gel matrix coatings were studied. The MCM-41 particles were synthesized and functionalized with HDTMS, and added to a sol composed of MTES:methanol:NH4OH 7M to create a coating. The materials synthesized with and without MCM-41-HDTMS were deposited, by dip coating, on Cu and Fe sheets, and were physically characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle, surface energy using the Owens, Wendt, Rabel, and Kaelble (OWRK) method, and by electrochemical impedance spectroscopy (EIS). The addition of the MCM-41-HDTMS to the MTES matrix induced an increase of the contact angle by about 10 degrees with an augment in its dispersive component, caused by a lofty deposition of long carbon chains from HDTMS over the high surface area of the MCM-41 particles, changing from hydrophobic to superhydrophobic materials with a contact angle of 155° for the Cu-MTES-HDTMS sample. EIS results show that the addition of MCM-41-HDTMS increases the charge transfer resistance providing better protection to metals. The results show that with the addition of MCM-41-HDTMS to an MTES matrix it is possible to synthesize superhydrophobic coatings capable of limiting the corrosion degradation process. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of MCM-41-HDTMS particles - Synthesis of coatings - Application of the coating - Characterization - DISCUSSION AND RESULTS : Scanning electron microscopy and elemental chemical analysis (SEM-EDS) - Atomic force microscopy (AFM) - Contact angle and surface energy - Electrochemical impedance spectroscopy - Table 1 : Atomic percentages of the main elements present in coatings obtained by EDS analysis - Table 2 : Surface energy of all substrates calculated by OWRK method - Table 3 : Quantitative impedance analysis for Cu, Cu-MTES, and Cu-MTES-HDTMS systems - Table 4 : Quantitative impedance analysis for Fe, Fe-MTES, and Fe-MTES-HDTMS systems DOI : https://doi.org/10.1007/s11998-022-00675-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00675-1.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38847 [article]

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