Modified Hybrid Coatings for Anticorrosion Protection of Aluminum Alloy 2024-T3

Autor:	Rocio del Pilar Bendezú Hernández, Bruno M. Vasconcelos, Hercílio Gomes de Melo, Marina Magnani, Isaline Recloux, Marie-Georges Olivier
Rok vydání:	2012
Předmět:	Materials science chemistry Aluminium Alloy Metallurgy engineering chemistry.chemical_element engineering.material
Zdroj:	ECS Transactions. 43:35-39
ISSN:	1938-6737 1938-5862
Popis:	Aluminum alloy 2024-T3 is an important material used in the aerospace industry. However due to its complex microstructure this alloy is highly prone to localized corrosion. The first step in the protection protocol of these alloys is either anodization or the application of a conversion coating. Nowadays standard industrial procedures employ carcinogenic chromate ions to produce the conversion coating. Hybrid organic-inorganic coatings are promising environmentally compliant chemicals that are being investigated as potential substitutes for chromates. In the present study we report some results on the anticorrosion behavior of a Ce modified TEOS-GPTMS hybrid coating as an anticorrosion system applied to Al alloy 2024-T3. The electrochemical investigation was carried out by means of electrochemical impedance spectroscopy (EIS) and anodic polarization curves, and SEM-EDS used to evaluate the coating microstructure of the coatings.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::16daf371878b7eb63e41faeb3aaca7ed https://doi.org/10.1149/1.4704936 Zobrazit plný text záznamu