Surface treatment for aluminum and aluminum alloys

Metal treatment – Compositions – Heat treating

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148 627, C23F 700

Patent

active

043916520

ABSTRACT:
A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.

REFERENCES:
patent: 3682713 (1972-08-01), Ries
patent: 4273592 (1981-06-01), Kelly
patent: 4370177 (1983-01-01), Fielin

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