Spectral Analysis of CO2 Corrosion Product Scales on 13Cr Tubing Steel

CO2 corrosion product scales formed on 13Cr tubing steel in autoclave and in the simulated corrosion environment of oil field are<br>investigated in the paper. The surface and cross-section profiles of the scales were observed by scanning electron microscopy (SEM),<br>the chemical compositions of the scales were analyzed using energy dispersion analyzer of X-ray (EDAX), X-ray diffraction (XRD)<br>and X-ray photoelectron spectroscopy (XPS) to confirm the corrosion mechanism of the 13Cr steel in the simulated CO2 corrosion<br>environment.