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Cobalt-free Black Passivation for Zinc-Nickel Surfaces

Exhibitors PR "Oberflächentage 2014" (ZVOreport 5, November 2014)

With PROSEAL CF 550 the company KIESOW DR. BRINKMANN GmbH & Co. KG presented a new black passivation of the PROSEAL CF range for alkaline or acidly deposited zinc-nickel coatings.

The product is free of chromium(VI) and cobalt compounds. It produces deep black passive layers without subsequent treatment. By a further sealing with SURFASEAL WL 180 bright layers with an excellent corrosion resistance can be generated.