2002•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

Corrosion resistance of electroplated Zn-Co alloy coating

安茂忠, 杨哲龙, 张景双, 李文良, 屠振密

Abstract

By the NSS test and the test in SO2 gas atmosphere and detecting the corr-t curves, Rp-t curves and the cyclic voltammogram curves, the corrosion resistance of the electroplated Zn-Co alloy coating was studied. The corrosion resistance of the electroplated Zn-Co alloy coating is three times higher than that of the galvanized coating. Because the corrosion resistance of the Zn-Co alloy coating is especially remarkable in SO2 gas atmosphere, it is particularly fit to be used as a protective coating in industrial atmosphere. The reason why the Zn-Co alloy coating has such a high corrosion resistance is that its corrosive product has a comparatively great role in depressing the corrosive process.

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Key concepts: Corrosion, Electroplating, Metallurgy, Coating, Materials science, Alloy, Galvanization, Composite material