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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URL o página oficial: https://doi.org/10.3390/coatings11111278

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:

Creador	Email	ORCID
Samaniego Gámez, Pedro Oliver	NO ESPECIFICADO	NO ESPECIFICADO
Almeraya Calderón, Facundo	facundo.almerayacl@uanl.edu.mx	orcid.org/0000-0002-3014-2814
Maldonado Bandala, Erick	NO ESPECIFICADO	NO ESPECIFICADO
Cabral Miramontes, José Ángel	NO ESPECIFICADO	orcid.org/0000-0003-1483-3081
Nieves Mendoza, Demetrio	NO ESPECIFICADO	NO ESPECIFICADO
Olguín Coca, Javier	NO ESPECIFICADO	NO ESPECIFICADO
López León, Luis Daimir	NO ESPECIFICADO	NO ESPECIFICADO
Silva Vidaurri, Luis Gerardo	NO ESPECIFICADO	NO ESPECIFICADO
Zambrano Robledo, Patricia del Carmen	patricia.zambranor@uanl.edu.mx	NO ESPECIFICADO
Gaona Tiburcio, Citlalli	citlalli.gaonatbr@uanl.edu.mx	orcid.org/0000-0001-9072-3090