Kinetics of the oxidation of stainless steel in hot and concentrated nitric acid in the passive and transpassive domains. (June 2016)

• Record Type: Journal Article
• Authors: Tcharkhtchi-Gillard, E.; Benoit, M.; Clavier, P.; Gwinner, B.; Miserque, F.; Vivier, V.
• Is Part Of: Corrosion science. Volume 107(2016)
• Page Start: 182
• Page End: 192
• Publication Date: 2016-06
• Subjects: A. stainless steel -- B. potentiostatic -- B. xps -- C. acid corrosion -- C. passive film -- C. transpassivity; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2016.02.031
• Languages: English
• ISSNs: 0010-938X

Abstract

Graphical abstract: Highlights: The anodic behavior was studied at steady-state with long-term experiments. Anodic and cathodic processes were simultaneously and independently measured. The oxide layer chemical composition and thickness were studied vs. the potential. The metal was enriched in nickel at the metal/oxide film interface. Abstract: Oxidation of 304L stainless steel was studied in 4 mol/L nitric acid solution at 100 °C over a wide potential domain. For different potentials, long-term chronoamperometry experiments coupled with mass loss measurements were performed until steady-state was reached to characterize the corrosion kinetics of the passive and transpassive domains. With EIS and XPS measurements, the passive domain was characterized by the formation of a thin film, the thickness of which was potential dependent.