2008•Electroplating & FinishingRequires access

Evaluation of anticorrosion effect of passivated zinc electroplating coating by electrochemical methods

Zuo Zheng-xun

Abstract

The corrosion resistance of Zn plating coating passivated with three different passivation baths in 1% (mass fraction) NaCl solution was evaluated by electrochemical methods, such as linear polarization resistance, open circuit potential and anode polarization curve. The results showed that the testing results obtained by the three electrochemical methods are in good agreement with that obtained by neutral salt spray (NSS) test. Thus the electrochemical methods can be used in the evaluation of anticorrosion effect of passivation for Zn plating coatings fast and effectively.

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Available abstract

Key concepts: Passivation, Materials science, Corrosion, Electroplating, Plating (geology), Electrochemistry, Polarization (electrochemistry), Zinc