Non-chromium passivation method and composition for...

Details Non-chromium passivation method and composition for... Non-chromium passivation method and composition for...

C - Chemistry, Metallurgy

23

C

C23C 22/42 (2006.01) C23C 22/08 (2006.01) C23C 22/74 (2006.01)

Patent

CA 2124977

A substantially chromium free composition and method for passivating a galvanized metal surface is disclosed. The passivation treatment which may be rinsed or dried-in-place includes phosphoric acid, boric acid and optionally molybdic acid.

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