Corrosion behavior of AA2055 aluminum-lithium alloys anodized in the presence of sulfuric acid solution
Samaniego Gámez, Pedro Oliver y Almeraya Calderón, Facundo y Maldonado Bandala, Erick y Cabral Miramontes, José Ángel y Nieves Mendoza, Demetrio y Olguín Coca, Javier y López León, Luis Daimir y Silva Vidaurri, Luis Gerardo y Zambrano Robledo, Patricia del Carmen y Gaona Tiburcio, Citlalli (2021) Corrosion behavior of AA2055 aluminum-lithium alloys anodized in the presence of sulfuric acid solution. Coatings, 11 (11). pp. 1-15. ISSN 2079-6412
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Texto
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Resumen
The aim of this work was to evaluate the corrosion behavior of the AA2055 Aluminum-lithium alloy anodized in a sulfuric acid (H2SO4) bath, varying the current density of 0.19 and 1 A·cm−2 and why the sealing solution was water (H2O) and sodium dichromate (Na2Cr2O7). Anodized samples were exposed to a 10 vol.% H2SO4 solution and the electrochemical technique used was electrochemical impedance spectroscopy. Scanning electron microscopy and X-ray photoelectron spectroscopy were employed to characterization of the anodizing layer, determinate morphology and thickness of coatings. The Na2Cr2O7 sealing solution tends to increase the charge transfer resistance and produces a more homogeneous and compact passive oxide layer, and imparts a corrosion inhibition protection to the AA2055. SEM observations indicated that the morphology and thickness of the anodic films formed on AA2055 aluminum-lithium alloy anodized have the best results for both current densities.
Tipo de elemento: | Article | |||||||||||||||||||||||||||||||||
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Palabras claves no controlados: | Anodizing, Aluminum-lithium 2055 alloy, Corrosion, SEM, XPS, Electrochemical impedance spectroscopy | |||||||||||||||||||||||||||||||||
Materias: | CONACYT > Ingeniería y Tecnología T Tecnología > TA Ingeniería General y Civil |
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Divisiones: | Ingeniería Mecánica y Eléctrica | |||||||||||||||||||||||||||||||||
Usuario depositante: | Dra Citlalli Gaona | |||||||||||||||||||||||||||||||||
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Fecha del depósito: | 13 Mar 2023 15:42 | |||||||||||||||||||||||||||||||||
Última modificación: | 28 Feb 2024 15:31 | |||||||||||||||||||||||||||||||||
URI: | http://eprints.uanl.mx/id/eprint/25123 |
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