Fluoride-free aluminum cleaning composition and process

Details Fluoride-free aluminum cleaning composition and process Fluoride-free aluminum cleaning composition and process

C - Chemistry, Metallurgy

23

G

149/20

C23G 1/12 (2006.01)

Patent

CA 1207218

ABSTRACT OF THE DISCLOSURE An aqueous acidic fluoride-free composition suitable for cleaning aluminum surfaces at moderate to low temperatures containing controlled, effective amounts of a surfactant or combination of surfactants, sulfate ions, phosphate ions and hydrogen ions to pro- vide a pH not in excess of about 2. The aqueous acidic cleaning composition is effective to remove residual organic contaminants as well as metallic particles or smut from the aluminum surfaces achieving a desired degree of surface etching and conditioning the surface for further treatment.

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