Loss of adhesion on galvanised finishes / Ernst-Hermann Timmermann in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 14, N° 1 (2021)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 14, N° 1 (2021) . - p. 44-45 Titre : Loss of adhesion on galvanised finishes Type de document : texte imprimé Auteurs : Ernst-Hermann Timmermann, Auteur Année de publication : 2021 Article en page(s) : p. 44-45 Langues : Anglais (eng) Catégories : Adhésion -- Défauts Corrosion Délaminage Métaux -- Revêtements protecteurs Surfaces -- Nettoyage Traîtements de surface Index. décimale : 671.73 Revêtement, galvanoplastie Résumé : Among the most common problems in the coating process in loss of adhesion. In the case of galvanised finishes, the apparent cleanliness of the substrate surface may give the impresson that the components do not need pre-treatment before being coated. However, this is a mistaken assumption, as practical experience shows. Note de contenu : - Removing white rust by sweeping or pickling - Adapting the pre-treatment to the type of galvanising - Fig. 1 : If a layer of white rust is not removed, the coating will delaminate. In some places, the galvanised finish has also been removed and red rust has formed - Fig. 2 : Complete delamination of the coating on a substrate that has not been correctly pre-treated Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35802 [article]

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