Non-chrome passivation for metal substrates

Details Non-chrome passivation for metal substrates Non-chrome passivation for metal substrates

C - Chemistry, Metallurgy

23

C

C23C 22/07 (2006.01) C23C 22/34 (2006.01)

Patent

CA 2156501

Aqueous acid solutions for treating metal surfaces such as aluminum and galvanized steel are disclosed. The solutions are mixtures of organophosphates or phosphonates and chloride or fluoride. The treating solutions can be used in place of chromium solutions.

On décrit des solutions aqueuses acides pour traiter des surfaces métalliques d'articles en aluminium et en acier galvanisé. Les solutions sont des mélanges d'organophosphates ou de phosphonates et d'un chlorure ou d'un fluorure. Les solutions de traitement peuvent être utilisées à la place de solutions de traitement contenant du chrome.

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