Characterization of the Corrosion Product of Plating by XAFS

Abstract

We analyzed a hot-dip galvanized steel surfaces after combined corrosion cyclic tests by X-ray absorption fine structure (XAFS), Scanning Electron Microscope, X-ray Photoelectron Spectroscopy, and X-ray diffraction in order to reveal the difference between XAFS analysis and the other surface analysis techniques. We evaluated the changes of Zn, and Zn-Al-Mg alloy hot-dip galvanized steel surfaces before, during, and after combined corrosion cyclic tests with those analytical techniques. These results shows that it is possible to analyze the valence state by XAFS, which is not by SEM-EDX, and obtain the information ranging from several nanometers to a few micrometers in thickness by changing the measurement technique of XAFS, as necessary.