| Titre : |
Modern phosphating process for automotive finishing |
| Type de document : |
texte imprimé |
| Auteurs : |
N. C. Debnath, Auteur ; G. N. Bhar, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 46-60 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The practical aspects of a modern tricationic phosphating process used for automotive finishing with cathodic electrodeposition process are discussed in details. The critical areas of operation in different stages of cleaning, surface activation, phosphating, passivation and rinsing, are highlighted along with the importance of the quality of water used for bath make-up and rinsing operations. The importance of electrochemical impedance spectroscopy in the evaluation of corrosion performance of phosphated and painted steel substrate is illustrated by comparing a modern tri-cationic phosphating formulation with conventional high zing phosphating formulations. |
| Note de contenu : |
- Pretreatment process for higher corrosion resistance
- Bath parameters are important at every stage
- Degreasing within two steps
- Phosphate coating quality inferiors with derusting
- Surface activation for getting nucleating centres
- Six important points for phosphating stage
- Passivating rinse for sealings of the pores
- Caracteristics of phosphate coating
- Accelerated tests evaluate performance of the phosphate coating
- Experimental
- Structure and composition analysis: nodular versus petal shape
- Evaluation of corrosion performance |
| En ligne : |
https://drive.google.com/file/d/1wAIAmw26jnwQjhfanepU0V2dMyU9IJSb/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10865 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/02 (04/2002) . - p. 46-60
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Modern phosphating process for automotive finishing in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/02 (04/2002)
