[article]
| Titre : |
The influence of the method of application of the paint on the corrosion of the substrate as assessed by ASTM and electrochemical method |
| Type de document : |
texte imprimé |
| Auteurs : |
Pablo R. Seré, Auteur ; D. M. Santagata, Auteur ; C. I. Elsner, Auteur ; A. R. di Sarli, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 128-134 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
AC together with DC and standardized procedures have considerable value in assessing the protective ability of a paint film by scientific studies of anticorrosion problems. Knowledge about the changes in permeability, conductivity and adhesion properties of coatings when exposed to aggressive environments is important, not only because it indicates how the coating may behave in practice, but also because it gives an insight into its protective properties in prevention of corrosion of the metal substrate.
From the values of corrosion potential, ionic and charge transfer resistance with immersion time, the alkyd paint applied by means of four different methods showed relatively good protective properties in the order Sy>R ≅ Sn but very poor ones for B panel. On the other hand, when submitted to the salt spray cabinet test, all the steel panels coated
with unscribed alkyd films have shown high resistance to the strongly aggressive medium. Likewise, the cross scribed panels show only corrosion at and close to the cross-scribing.
Taking into account the overall results, the most effective application method was spraying followed by roller coating, spinning and lastly brushing. Further work needs to be done to confirm some of the assumptions made here. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE
- RESULTS : Electrochemical tests - Salt spray cabinet and adhesion tests
- DISCUSSION : Electrochemical measurements - Salt spray cabinet and adhesion tests |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16476 |
in SURFACE COATINGS INTERNATIONAL > Vol. 81, N° 3 (03/1998) . - p. 128-134
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