Fabrication of functional surfaces of aluminum alloy with a transition from superhydrophilic to superhydrophobic by nanosecond laser irradiation / X. G. Song in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 1897-1912 Titre : Fabrication of functional surfaces of aluminum alloy with a transition from superhydrophilic to superhydrophobic by nanosecond laser irradiation Type de document : texte imprimé Auteurs : X. G. Song, Auteur ; Z. H. Liang, Auteur ; H. J. Wang, Auteur ; S. P. Hu, Auteur ; W. Fu, Auteur ; X. R. Xu, Auteur ; C. W. Tan, Auteur Année de publication : 2023 Article en page(s) : p. 1897-1912 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium -- Alliages Hydrophilie Hydrophobie lasers Métaux -- Surfaces Mouillage (chimie des surfaces) Spectroscopie de photoélectrons Surfaces fonctionnelles Index. décimale : 667.9 Revêtements et enduits Résumé : The wettability of metal surfaces is of importance in different practical applications. In the present work, we investigated the role of alumina coatings in the variation of the surface wettability of aluminum alloys by nanosecond laser ablation. The superhydrophilic surface (water contact angle close to 0°) was successfully prepared, and the superhydrophilic surface was transformed into the superhydrophobic surface (water contact angle of about 151.4°) after non-fluorinated N-octyltriethoxysilane (OcTES) treatment. XPS results showed that the Al–OH (–OH) hydrophilic groups generated by coating decomposition occupied the main regions on the surface after laser ablation. After OcTES treatment, the OcTES molecules formed Si–O–Al bonds with the rough surface, which significantly increased the C–C(H) hydrophobic groups of the surface. The superhydrophobic surface showed good self-cleaning, anti-icing and anti-corrosion properties. The fabrication method is fast, non-toxic and environmentally friendly, which makes it potentially useful for engineering applications. Note de contenu : - MATERIALS AND METHODS : Materials - Surface preparation - Surface characterization - RESULTS AND DISCUSSION : Superhydrophobicity - Performance of superhydrophobic surfaces for potential applications - Table 1 : Laser ablation parameters in the experiments - Table 2 : Liquid parameters used for the surface energy calculation - Table 3 : High-resolution XPS results of the aluminum alloy surfaces after different power laser treatment - Table 4 : High-resolution XPS results of the OcTES-treated aluminum alloy surfaces after different power laser pretreatment - Table 5 : Parameters extracted from cyclic polarization curves DOI : https://doi.org/10.1007/s11998-023-00785-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00785-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40169 [article]

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