Addition of molybdate ions to the anodizing bath to improve the corrosion resistance of clad 2024-T3 alloy anodized in tartaric-sulfuric acid

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of Udine-
Autor(es): dc.contributorMontanuniversitaet Leoben-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAlmeida, Thassia Felix de-
Autor(es): dc.creatorPrada Ramirez, Oscar Mauricio-
Autor(es): dc.creatorLanzutti, Alex-
Autor(es): dc.creatorRodrigues, Cleber Lima-
Autor(es): dc.creatorBrabetz, Manfred-
Autor(es): dc.creatorKremmer, Thomas M.-
Autor(es): dc.creatorHammer, Peter-
Autor(es): dc.creatorde Melo, Hercilio Gomes-
Data de aceite: dc.date.accessioned2025-08-21T19:19:28Z-
Data de disponibilização: dc.date.available2025-08-21T19:19:28Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-04-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.surfcoat.2024.130682-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299791-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299791-
Descrição: dc.descriptionIn the present investigation molybdates ions (MoO4−2) were added to a tartaric‑sulfuric acid (TSA) bath, which was employed to anodize AA2024-T3 clad samples. The incorporation of Mo into the anodized layer was investigated by different techniques: X-ray photoelectron spectroscopy (XPS), glow-discharge optical emission spectroscopy (GDOES), Rutherford backscattering spectrometry (RBS) and scanning electron microscopy (SEM), while the corrosion resistance was evaluated by electrochemical impedance spectroscopy (EIS) techniques in neutral (0.5 M) and acidic (0.1 M, pH = 4.0) NaCl solutions. The different characterization techniques indicate that small amounts of the modifier were incorporated into the anodized layer, while the SEM analysis confirmed that the morphology of the layer was not changed, although it was thicker when anodized in the Mo containing bath. Evaluation of corrosion resistance by EIS in both media showed that samples anodized in the molybdate containing bath were more corrosion resistant and durable. Fitting results of the electric equivalent circuit indicate that this may be a consequence of a thicker barrier layer for these samples.-
Descrição: dc.descriptionDepartamento de Eng. Metalúrgica e de Materiais Escola Politécnica da Universidade de São Paulo, Av. Prof. Mello de Moraes, 2463, Cidade Universitária, SP-
Descrição: dc.descriptionPolytechnic Department of Engineering and Architecture University of Udine, Via delle Scienze 206-
Descrição: dc.descriptionInstituto de Física da Universidade de São Paulo, Rua do Matão, trav. R 187-
Descrição: dc.descriptionAlloy Development Group Montanuniversitaet Leoben, Forschungszentrum Seibersdorf-
Descrição: dc.descriptionChair of Non-Ferrous Metallurgy Montanuniversitaet Leoben, Franz-Josef-Strasse 18-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Rua Prof. 55 Francisco Degni 55, SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Rua Prof. 55 Francisco Degni 55, SP-
Idioma: dc.languageen-
Relação: dc.relationSurface and Coatings Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subject2024-T3 clad-
Palavras-chave: dc.subjectEIS-
Palavras-chave: dc.subjectModified anodizing bath-
Palavras-chave: dc.subjectSodium molybdate-
Palavras-chave: dc.subjectTartaric‑sulfuric acid-
Título: dc.titleAddition of molybdate ions to the anodizing bath to improve the corrosion resistance of clad 2024-T3 alloy anodized in tartaric-sulfuric acid-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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