Nickel- and nitrite-free pretreatment of car bodies
β Scribed by Wimmer, Walter; Gottschlich, Jurgen; Bayerische Motorenwerke, AG; Dingolfing, ; Busch, Edgar; Gehmecker, Horst
- Book ID
- 123285837
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 364 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0026-0576
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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
In today's automotive industry in order to protect car bodies from corrosion, spray or immersion type zinc phosphating processes are applied. In both types, nickel and chromium are widely used though they are harmful to human health and environment. In this study, car body's corrosion performance,