Development of a chromium-free pretreatment system for aluminum bodies
Development of a chromium-free pretreatment system for aluminum bodies
- New search for: Nishino, T.
- New search for: Izumi, K.
- New search for: Nishino, T.
- New search for: Izumi, K.
A chromium-free surface treatment method was developed for aluminum bodies. By adding fluorine ions and iron complex compounds to the current zinc phosphate pretreatment bath, an improved zinc phosphate film is formed on aluminum. Also, increasing the manganese in the pretreatment bath improves the alkaline resistance properties of the zinc phosphate film. As a result of these changes, the zinc phosphate film has improved secondary adhesion after water conditioning and improved filiform corrosion resistance without using a chromium rinse. Therefore, chromium can be eliminated from the paint process of aluminum bodies. This, in turn, reduces enviromental burdens previously posed.
Document information
Development of a chromium-free pretreatment system for aluminum bodies
Entwicklung einer Chrom-freien Oberflächenbehandlung für Aluminiumkarosserien
JSAE Review ; 23 , 4 ; 495-500
2002
6 Seiten, 10 Bilder, 2 Tabellen, 6 Quellen
Article (Journal)
English
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