Development of a chromium-free pretreatm
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Toshiya Nishino; Koichiro Izumi
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Article
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2002
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Elsevier Science
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English
β 576 KB
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