| Titre : |
Improved performance of phosphoric acid anti-corrosive pretreatments when aluminium hydroxide is added |
| Type de document : |
texte imprimé |
| Auteurs : |
E. Almeida, Auteur ; D. Pereira, Auteur ; M. Q. Figueiredo, Auteur ; M. Morcillo, Auteur ; V. M. M. Lobo, Auteur |
| Année de publication : |
1995 |
| Article en page(s) : |
p. 6-12 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Peinture anticorrosion' 'Protection corrosion' 'Préparation surface' Phosphatation 'Phosphorique acide' 'Aluminium Hydroxyde' Acier 'Etude expérimentale' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
This work presents the main results of an experimental study carried out with rust pretreatments based on phosphoric acid solutions with the additionof aluminium hydroxide.
Because the transformation of rust steel surfaces by phosphoric acid solutions depends strongly on the interfacial conditions, the first step in this work was the clear definition of rust formation conditions and of a reproducible technique for burshing them to a known degree as defined in standard SIS 055900. After that, the best range of acid concentration was optimised in the case of phosphoric acid solutions and phosphoric acid solutions saturated with aluminium hydroxide.
Several characterisation techniques were used, such as scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), infrared spectrometry (FTIR) and X-ray diffraction (XRD), to interpret the phenomenon of rust transformation. The results obtained lead to the conclusion that the best anti-corrosive behaviour of phosphoric acid solutions is obtained when they are saturated with aluminium hydroxide. |
| Note de contenu : |
- Steel substrated used
- Pretreatments used and their application
- Surface characterisation
- Paint coating application and its behaviour |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16902 |
in SURFACE COATINGS INTERNATIONAL > Vol. 78, N° 1 (01/1995) . - p. 6-12
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