Improved corrosion resistance and hydrophobic stability of sol-gel coatings by benzoxazine modification on aluminum alloys AA1060 / Zhou Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 893-905 Titre : Improved corrosion resistance and hydrophobic stability of sol-gel coatings by benzoxazine modification on aluminum alloys AA1060 Type de document : texte imprimé Auteurs : Zhou Zhou, Auteur ; Juan Liu, Auteur ; Xin Meng, Auteur ; Changlu Zhou, Auteur Année de publication : 2024 Article en page(s) : p. 893-905 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium -- Alliages Anticorrosifs Anticorrosion Benzoxazine Caractérisation Hydrophobie Métaux -- Revêtements protecteurs Revêtements organiques Silanes Sol-gel, Procédé Index. décimale : 667.9 Revêtements et enduits Résumé : A series of sol-gel coatings based on tetraethoxysilane (TEOS) was adopted in order to provide corrosion protection for aluminum alloys AA1060, which were modified by incorporating various ratios of silane-functionalized benzoxazine (Bz), labeled as Bz-based sol–gel coatings. Fourier transform infrared spectra were utilized to characterize the crosslinking network of Bz-based sol–gel coatings through calculating the conversion of Bz structure after the curing process, which was also further confirmed by the gel content test. Both hydrophobicity and corrosion resistance of Bz-based sol–gel coatings were fully investigated with the assistance of water contact angle (WCA) measurements, electrochemical impedance spectroscopy (EIS), and salt spray test. Bz incorporation could improve hydrophobic stability and corrosion resistance of Bz-based sol–gel coatings with increasing the Bz content during the 30-day immersion in a 3.5 wt% NaCl aqueous solution. Better performance of Bz-based sol–gel coatings than that of a control TEOS coating with a WCA above 93° and a charge-transfer resistance over 100 kΩ cm2 after 30-day EIS measurement shows their effective protective property for aluminum alloys. Note de contenu : - EXPERIMENTAL : Chemicals - Synthesis of Bz monomer - Surface treatment of aluminum alloys - Preparation of Bz-based sol-gel coatings - Characterization - RESULTS AND DISCUSSION : Crosslinking structures of Bz-based sol-gel coatings - Hydrophobicity of Bz-based sol-gel coatings - Corrosion resistance behaviors of Bz-based sol-gel coatings DOI : https://doi.org/10.1007/s11998-023-00858-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00858-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41065 [article]

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