Effect of sealing treatment on the corrosion behavior of anodized AA2099 aluminum-lithium alloy

Samaniego Gámez, Pedro Oliver y Almeraya Calderón, Facundo y Martin Díaz, Ulises y Ress, Jacob y Gaona Tiburcio, Citlalli y Silva Vidaurri, Luis Gerardo y Cabral Miramontes, José Angel y Bastidas, José María y Chacón Nava, José G. y Bastidas, David M. (2020) Effect of sealing treatment on the corrosion behavior of anodized AA2099 aluminum-lithium alloy. Revista de Metalurgia, 56 (4). pp. 1-9. ISSN 0034-8570

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URL o página oficial: https://doi.org/10.3989/revmetalm.180

Resumen

The corrosion behavior of the sulphuric-anodized AA2099 using two different current densities, 0.19 or 1.0 A·cm−2, with two different sealing treatments in H2O and 6 wt.% Na2Cr2O7 at 95 °C was studied in 3.5 wt.% NaCl and 10 vol.% H2SO4 solutions. The AA2099 is widely used in aeronautical applications, thus it is essential to present good corrosion performance in chloride and acid rain environments. The surface morphology of the anodized film was characterized by scanning electron microscopy (SEM), the electrochemical corrosion behavior was studied using electrochemical impedance (EIS), and finally characterization of the surface chemical composition was revealed by X-ray photoelectron spectroscopy (XPS). It was found the 6 wt.% Na2Cr2O7 sealing treatment imparts a more homogeneous and compact passive layer, and tends to increase the charge transfer resistance, thus improving the corrosion behavior of the anodized AA2099.

Tipo de elemento: Article
Palabras claves no controlados: Aleación de aluminio-litio AA2099, Anodizado, Corrosión, Impedancia electroquímica, SEM, XPS
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, FacundoNO ESPECIFICADOorcid.org/0000-0002-3014-2814
Martin Díaz, UlisesNO ESPECIFICADONO ESPECIFICADO
Ress, JacobNO ESPECIFICADONO ESPECIFICADO
Gaona Tiburcio, CitlalliNO ESPECIFICADOorcid.org/0000-0001-9072-3090
Silva Vidaurri, Luis GerardoNO ESPECIFICADONO ESPECIFICADO
Cabral Miramontes, José AngelNO ESPECIFICADONO ESPECIFICADO
Bastidas, José MaríaNO ESPECIFICADONO ESPECIFICADO
Chacón Nava, José G.NO ESPECIFICADONO ESPECIFICADO
Bastidas, David M.NO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 08 Mar 2023 20:47
Última modificación: 08 Mar 2023 20:51
URI: http://eprints.uanl.mx/id/eprint/24990

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