2014•Plating and FinishingRequires access

Study on Corrosion Resistance Properties of Electroplated Ni-Co Alloy Coating

Song Zhen-xin

Abstract

Electroplated Ni-Co alloy coating was widely used in actual production due to it's excellent high temperature corrosion resistance. In this paper,influences of Co content on corrosion resistance properties of the coating were studied,and surface morphology of the coating was characterized by SEM. Results of Anodic polarization test,AC impedance test and immersion test showed that: in 10% H2SO4,10% HCl and artificial seawater,the coating corrosion resistance properties would gradually increased with the increasing of Co content,this indicated that the Co content increasing was helpful to enhance the coating corrosion resistance properties.

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Key concepts: Corrosion, Materials science, Coating, Electroplating, Metallurgy, Alloy, Polarization (electrochemistry), Dielectric spectroscopy