2011•Total Corrosion ControlRequires access

Progress in Research on Chromium-free Passivation Technology of Zinc Plating Layers

Guo Chong-wu

Abstract

Development actuality about chromium-free pasivation technology was summarized.Chromium-free passivation includes two systems of both inorganic passivation and organic passivation,Most of the pasivation technologies are in the state of experimental research.Use of ZECCOAT chromium-free passivation technology was introduced.ZECCOAT passivation is advanced,in which nano technology is used,the passivation solution is innoxious,the passive film is thin and has selfrepair property,and corrosion resistance of the passive film is excellent.Productive practice showed that ZECCOAT pasivation technology satisfied the requirement of parts of automobile.

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Key concepts: Passivation, Chromium, Materials science, Corrosion, Zinc, Metallurgy, Layer (electronics), Nanotechnology