Post-anodization methods for improved anticorrosion properties : a review / Telmenbayar Lkhagvaa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 1 (01/2021) . - p. 1–17 Titre : Post-anodization methods for improved anticorrosion properties : a review Type de document : texte imprimé Auteurs : Telmenbayar Lkhagvaa, Auteur ; Zeeshan Ur Rehman, Auteur ; Dongjin Choi, Auteur Année de publication : 2021 Article en page(s) : p. 1–17 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Couches minces Métaux -- Oxydation anodique Microstructures Revêtement métallique Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : Anodization is a prominent surface treatment for light alloys that has been successfully used in the industry for the last two decades as it provides effective corrosion and wear protection. However, anodic films have porous structures, and the period of corrosion protection is limited by the nature of anodic pores, through which corrosive species may enter and reach the substrate surface. To seal the anodic porous layer, various post-anodization treatments have been developed. The most commonly employed post-treatments are the layered double hydroxide (LDH), sol–gel, hydrothermal, and cerium-based methods. Recent research revealed that after applying these post-treatments to various anodized magnesium alloys, the corrosion resistance of the resulting coatings is sufficiently enhanced because the post-layers seal the pores in the anodic thin films. This article reviews the recent research progress regarding post-anodization coatings formed on anodized magnesium alloys. Furthermore, the corrosion protection performance and microstructural changes of the resulting coatings are elucidated. The LDH method was found to be the most beneficial sealing treatment, as the treated anodized specimens demonstrated excellent corrosion resistance and a significant self-healing effect. In contrast, less satisfactory protection properties were obtained using the sol–gel, hydrothermal, and cerium-based sealing methods. Note de contenu : - POST-TREATMENT METHODS FOR ANODIZED THIN FILMS : Layered double hydroxide (LDH) method - Sol-gel method - Hydrothermal method - Cerium-based method - POST-TREATMENT EFFECT ON COMPOSITION AND MICROSTRUCTURE OF ANODIZED MAGNESIUM ALLOY THIN FILM : LDH post-treatment - Sol-gel post treatment - Hydrothermal post-treatment - Cerium post-treatment - POST-TREATMENT EFFECT ON CORROSION RESISTANCE OF THE ANODIZED MAGNESIUM ALLOY THIN FILM : Layered double hydroxides - Sol-gel method - Hydrothermal treatment - Cerium-based sealing treatment - Table 1 : Summary of post-anodization coating procedures and corrosio performance of the resulting coatings DOI : https://doi.org/10.1007/s11998-020-00367-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00367-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35347 [article]

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