| Titre : |
Underfilm corrosion on polyurethane-coated aluminum alloy 2024-T3 containing dissimilar metal fasteners |
| Type de document : |
texte imprimé |
| Auteurs : |
A. E. Hughes, Auteur ; T. Markley, Auteur ; A. K. Neufeld, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 313-322 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Tags : |
'Vieillissement accéléré' 'Corrosion acide' Anticorrosion Nickel Cuivre Assemblage boulonné 'Assemblage mécanique' ' Aluminium Alliage Peinture 'Traitement de surface' Polyuréthane |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Panels of AA2024-T3 were fastened using Cu and Cu-Ni fasteners, pretreated, and coated with around 25 µm of polyurethane film. The pretreatments were based on typical conversion coating processes. Samples included alkaline-cleaned, deoxidized, and conversion-coated. The conversion coatings included chromate and cerium-based conversion coatings. Samples were tested by scribing around the fastener and on the AA2024-T3 (matrix), exposing them to HCl vapor for 15 min, and subjecting them to a filiform corrosion test by exposure to 82% relative humidity at 40 ± 1 °C for up to 1000 hr. Inspection showed that the filiform corrosion that developed from a scribe around the fastener was an order of magnitude larger than from a scribe on the matrix (scribe on AA2024-T3). With respect to the surface treatments, the amount of filiform corrosion for scribes on the matrix was greatest on the alkaline-cleaned samples, followed by the deoxidized samples, with the conversion-coated samples performing the best. The amount of filiform corrosion for scribes around the fasteners was highest for the deoxidized sample. |
| DOI : |
10.1007/s11998-006-0028-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-006-0028-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3685 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 4 (10/2006) . - p. 313-322
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