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Galvanizing still plays an important role in surface treatments. The thickness and quality of the zinc layer is the basic monitored property of materials treated in this way. Optical microscopy gives the correct value of the layer thickness, but it is a time-consuming destructive method. Conversely, GDOES is a fast method, but its accuracy needs to be verified (e.g. microscopically). This article also deals with another important parameter of the method (accuracy and thus also the repeatability of measurements). It follows that the GDOES method is correct and accurate for measuring the thickness of the zinc layer.
Keywords: Zn layer, GDOES, optical microscopy, accuracy, precision© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.