Open Access Conference Proceedings

In this paper, the main advantages of GDOES profiling analysis in evaluating the thickness of zinc coating applied using hot-dip and electroplating technology on steel sheets are assessed, including the evaluation of electroplating zinc coating with a chromate and chromite passivation layer.Zinc coating is one of the surface treatments of steel products and structures in order to protect them against corrosion attack by the surrounding aggressive environment and contributes to increasing their service life. The thickness, phase structure, and chemical composition of the Zn coating influence its protective properties. In addition to destructive and non-destructive methods, optical and electron microscopy, which require time-consuming preparation of Zn-coated steel sheet samples, are also used to evaluate Zn coating. Based on the experimental work and its results, it was found that the use of GDOES profiling analysis can replace optical and electron microscopy with high accuracy.

Keywords: Zinc coating, GDOES profiling analysis, optical microscopy

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