title: Determining the Chemical Composition of Corrosion Inhibitor/Metal Interfaces with XPS: Minimizing Post Immersion Oxidation.
abstract: An approach for acquiring more reliable X-ray photoelectron spectroscopy data from corrosion inhibitor/metal interfaces is described. More specifically, the focus is on metallic substrates immersed in acidic solutions containing organic corrosion inhibitors, as these systems can be particularly sensitive to oxidation following removal from solution. To minimize the likelihood of such degradation, samples are removed from solution within a glove box purged with inert gas, either N2 or Ar. The glove box is directly attached to the load-lock of the ultra-high vacuum X-ray photoelectron spectroscopy instrument, avoiding any exposure to the ambient laboratory atmosphere, and thus reducing the possibility of post immersion substrate oxidation. On this basis, one can be more certain that the X-ray photoelectron spectroscopy features observed are likely to be representative of the in situ submerged scenario, e.g. the oxidation state of the metal is not modified.
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester.
authors.forename: Monika S
authors.initials: MS
authors.lastname: Walczak
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester; Laboratorio de Caracterización de Materiales Sintéticos y Naturales, Instituto Mexicano del Petróleo.
authors.forename: Perla
authors.initials: P
authors.lastname: Morales-Gil
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester.
authors.forename: Turia
authors.initials: T
authors.lastname: Belashehr
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester.
authors.forename: Kiran
authors.initials: K
authors.lastname: Kousar
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester; Departamento de Metalurgia y Materiales, Instituto Politécnico Nacional.
authors.forename: Paulina
authors.initials: P
authors.lastname: Arellanes Lozada
authors.affiliation: Corrosion and Protection Centre, School of Materials, The University of Manchester; robert.lindsay@manchester.ac.uk.
authors.forename: Robert
authors.initials: R
authors.lastname: Lindsay
mesh_terms: D003343:Corrosion; D008670:Metals / Q000737:chemistry*; D010084:Oxidation-Reduction; D056951:Photoelectron Spectroscopy / Q000379:methods; D013232:Steel / Q000737:chemistry*
chemical_list: D008670:Metals; D013232:Steel