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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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
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
Divisiones: Ingeniería Mecánica y Eléctrica
Usuario depositante: Dra Citlalli Gaona
Creadores:
CreadorEmailORCID
Samaniego Gámez, Pedro OliverNO ESPECIFICADONO ESPECIFICADO
Almeraya Calderón, Facundofacundo.almerayacl@uanl.edu.mxorcid.org/0000-0002-3014-2814
Maldonado Bandala, ErickNO ESPECIFICADONO ESPECIFICADO
Cabral Miramontes, José ÁngelNO ESPECIFICADOorcid.org/0000-0003-1483-3081
Nieves Mendoza, DemetrioNO ESPECIFICADONO ESPECIFICADO
Olguín Coca, JavierNO ESPECIFICADONO ESPECIFICADO
López León, Luis DaimirNO ESPECIFICADONO ESPECIFICADO
Silva Vidaurri, Luis GerardoNO ESPECIFICADONO ESPECIFICADO
Zambrano Robledo, Patricia del Carmenpatricia.zambranor@uanl.edu.mxNO ESPECIFICADO
Gaona Tiburcio, Citlallicitlalli.gaonatbr@uanl.edu.mxorcid.org/0000-0001-9072-3090
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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