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Título: | Inhibition by CO of the corrosion of Fe, Ni, and their alloys in concentrated HCl solutions |
Autor: | Cabello, Gema CSIC ORCID; Funkhouser, Gary; Cassidy, J.; Marco, J.F. CSIC ORCID CVN ; Cuesta, Angel CSIC ORCID | Palabras clave: | Corrosion inhibition Adsorbed CO Fe Ni Concentrated HCl FTIRS |
Fecha de publicación: | 1-nov-2011 | Editor: | Elsevier | Citación: | Journal of Electroanalytical Chemistry 662: 150-156 (2011) | Resumen: | Inhibition by CO of the corrosion of Fe, Ni, and three alloys, containing either Fe and large amounts of Ni (Incoloy 825) or large amounts of Fe (Uniloy-420 and N80 steels) in solutions containing between 7.5% and 28% HCl was studied using potentiodynamic polarization curves, gravimetric tests, and FTIRS. In all cases, but Uniloy-420 in 28% HCl, a clear inhibition of corrosion in the presence of CO in the solution was shown by the gravimetric tests and from cyclic voltammetry, the inhibition being higher in the case of Ni and Ni-containing alloys. CO chemisorbed on Fe and/or Ni atoms present on the alloy surface was identified as the species responsible for corrosion inhibition. The inhibition of corrosion is higher in the cases of Ni and Incoloy 825. © 2011 Elsevier B.V. All rights reserved. | Descripción: | 7 pags, 6 figs, 2 tabs. -- Supplementary data associated with this article can be found, inthe online version, atdoi:10.1016/j.jelechem.2011.05.015. | Versión del editor: | http://dx.doi.org/10.1016/j.jelechem.2011.05.015 | URI: | http://hdl.handle.net/10261/253806 | DOI: | 10.1016/j.jelechem.2011.05.015 | Identificadores: | doi: 10.1016/j.jelechem.2011.05.015 issn: 1572-6657 |
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