Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution

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 (H&l...

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Autores principales:	Pedro Oliver Samaniego-Gámez, Facundo Almeraya-Calderon, Erick Maldonado-Bandala, Jose Cabral-Miramontes, Demetrio Nieves-Mendoza, Javier Olguin-Coca, Luis Daimir Lopez-Leon, Luis G. Silva Vidaurri, Patricia Zambrano-Robledo, Citlalli Gaona-Tiburcio
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	anodizing aluminum-lithium 2055 alloy corrosion SEM XPS electrochemical impedance spectroscopy Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/6e274bbe8ff845a98a077e5a1220194a
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spelling	oai:doaj.org-article:6e274bbe8ff845a98a077e5a1220194a2021-11-25T17:15:30ZCorrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution10.3390/coatings111112782079-6412https://doaj.org/article/6e274bbe8ff845a98a077e5a1220194a2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1278https://doaj.org/toc/2079-6412The aim of this work was to evaluate the corrosion behavior of the AA2055 Aluminum-lithium alloy anodized in a sulfuric acid (H<sub>2</sub>SO<sub>4</sub>) bath, varying the current density of 0.19 and 1 A·cm<sup>−2</sup> and why the sealing solution was water (H<sub>2</sub>O) and sodium dichromate (Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>). Anodized samples were exposed to a 10 vol.% H<sub>2</sub>SO<sub>4</sub> 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 Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> 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.Pedro Oliver Samaniego-GámezFacundo Almeraya-CalderonErick Maldonado-BandalaJose Cabral-MiramontesDemetrio Nieves-MendozaJavier Olguin-CocaLuis Daimir Lopez-LeonLuis G. Silva VidaurriPatricia Zambrano-RobledoCitlalli Gaona-TiburcioMDPI AGarticleanodizingaluminum-lithium 2055 alloycorrosionSEMXPSelectrochemical impedance spectroscopyEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1278, p 1278 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anodizing aluminum-lithium 2055 alloy corrosion SEM XPS electrochemical impedance spectroscopy Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	anodizing aluminum-lithium 2055 alloy corrosion SEM XPS electrochemical impedance spectroscopy Engineering (General). Civil engineering (General) TA1-2040 Pedro Oliver Samaniego-Gámez Facundo Almeraya-Calderon Erick Maldonado-Bandala Jose Cabral-Miramontes Demetrio Nieves-Mendoza Javier Olguin-Coca Luis Daimir Lopez-Leon Luis G. Silva Vidaurri Patricia Zambrano-Robledo Citlalli Gaona-Tiburcio Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
description	The aim of this work was to evaluate the corrosion behavior of the AA2055 Aluminum-lithium alloy anodized in a sulfuric acid (H<sub>2</sub>SO<sub>4</sub>) bath, varying the current density of 0.19 and 1 A·cm<sup>−2</sup> and why the sealing solution was water (H<sub>2</sub>O) and sodium dichromate (Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>). Anodized samples were exposed to a 10 vol.% H<sub>2</sub>SO<sub>4</sub> 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 Na<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> 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.
format	article
author	Pedro Oliver Samaniego-Gámez Facundo Almeraya-Calderon Erick Maldonado-Bandala Jose Cabral-Miramontes Demetrio Nieves-Mendoza Javier Olguin-Coca Luis Daimir Lopez-Leon Luis G. Silva Vidaurri Patricia Zambrano-Robledo Citlalli Gaona-Tiburcio
author_facet	Pedro Oliver Samaniego-Gámez Facundo Almeraya-Calderon Erick Maldonado-Bandala Jose Cabral-Miramontes Demetrio Nieves-Mendoza Javier Olguin-Coca Luis Daimir Lopez-Leon Luis G. Silva Vidaurri Patricia Zambrano-Robledo Citlalli Gaona-Tiburcio
author_sort	Pedro Oliver Samaniego-Gámez
title	Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
title_short	Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
title_full	Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
title_fullStr	Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
title_full_unstemmed	Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution
title_sort	corrosion behavior of aa2055 aluminum-lithium alloys anodized in the presence of sulfuric acid solution
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6e274bbe8ff845a98a077e5a1220194a
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Corrosion Behavior of AA2055 Aluminum-Lithium Alloys Anodized in the Presence of Sulfuric Acid Solution

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