Photoreduction of Hexavalent Chromium during X‐Ray Photoelectron Spectroscopy Analysis of Electrochemical and Thermal Films

Abstract

Cr spectra obtained by x‐ray photoelectron spectroscopy (XPS) of corrosion product layers is critically examined for evidence of photoreduction of hexavalent species. Tetravalent and trivalent decomposition products are identified, and methods of curve fitting and analysis are discussed. Disagreement between x‐ray absorption near end structure and XPS data, and between thermodynamic analysis and XPS data lead to the acceptance of a model for photoreduction of Cr6+based primarily upon core photoemission.

Keywords

X-ray photoelectron spectroscopyHexavalent chromiumThermal decompositionAnalytical Chemistry (journal)X-rayDecompositionChromiumElectrochemistryMaterials scienceChemistryPhysical chemistryElectrodeMetallurgyNuclear magnetic resonanceOpticsEnvironmental chemistryPhysics

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Publication Info

Year: 1991
Type: article
Volume: 138
Issue: 10
Pages: 2921-2927
Citations: 131
Access: Closed

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APA Style

                            
                                    Gary P. Halada, 
                                
                                    Clive R. Clayton
                                
                            (1991). 
                            Photoreduction of Hexavalent Chromium during X‐Ray Photoelectron Spectroscopy Analysis of Electrochemical and Thermal Films. 
                            Journal of The Electrochemical Society
                            , 138
                            (10)
                            , 2921-2927.
                            https://doi.org/10.1149/1.2085340

Identifiers

DOI: 10.1149/1.2085340