Chromatation bath and process for the finishing of zinc,...

Details Chromatation bath and process for the finishing of zinc,... Chromatation bath and process for the finishing of zinc,...

C - Chemistry, Metallurgy

23

C

C23C 22/27 (2006.01) C23C 22/30 (2006.01) C23C 22/82 (2006.01) C23C 22/84 (2006.01)

Patent

CA 2164555

Procédé pour la finition de surfaces de zinc, d'alliage de zinc; ou de cadmium, consistant à mettre en contact les pièces à traiter d'abord avec un bain de chromatation acide à base de sels de chrome, de cobalt et d'argent, puis avec un bain de finition comprenant une silice colloïdale, un inhibiteur de corrosion, un agent complexant, un agent tensio-actif et un colorant noir.

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