| No. Registro | 002438509 |
| Tipo de material | ARTIGO DE PERIODICO - NACIONAL |
| Cód. publicação |  10.1590/S1516-14392013005000115 DOI |
| Entrada Principal | Salazar-Banda, Giancarlo Richard (*) NAC |
| Título | Environmentally friendly sol–gel-based anticorrosive coatings on aluminum alloy 2024. |
| Imprenta | São Carlos, 2013. |
| Descrição | p. 397-402. |
| Idioma | Inglês |
| Nota | Disponível em: <http://dx.doi.org/10.1590/S1516-14392013005000115>. Acesso em: 9 jan. 2014 |
| Assunto | NANOTECNOLOGIA |
| | BIOMATERIAIS |
| Autor Secundário | Eguiluz, Katlin Ivon Barrios (*) NAC Laboratório de Eletroquímica e Nanotecnologia, Programa de Pós-graduação em Engenharia de Processos, Instituto de Tecnologia e Pesquisa, Universidade Tiradentes, Aracaju, SE, Brazil |
| | Motheo, Artur de Jesus |
| | Machado, Sergio Antonio Spinola |
| Fonte | In: Materials Research, São Carlos, v. 16, n. 6, p. 1315-1324, 2013, ISSN: 1516-1439 |
| Localiz.Eletrônica |
 "Clicar" sobre o botão para acesso ao Currículo Lattes de Artur de Jesus Motheo |
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"Clicar" sobre o botão para acesso ao Currículo Lattes de Sergio Antonio Spinola Machado |
| Resumo/Outros | Chromate coatings used as corrosion protection technologies for aluminum alloys are environmentally harmful and extremely toxic. This paper presents an investigation on the deposition of environmentally friendly cerium oxide-based anticorrosive coatings on aluminum alloy 2024 substrates by the sol–gel method. The influence of the calcination temperature on both the microstructural characteristics and the electrochemical corrosion performance was tested using scanning electron microscopy, X-ray diffraction, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), before and after, periods of immersion in saline corrosive solutions. The ceramic coatings synthesized at 200, 300 and 400 °C showed very resistive behaviors leading to both an efficient passivation of the alloy surfaces and good corrosion protection. This passivation was maintained for 30 days of immersion in saline solutions, as well as, when aggressive electrochemical polarization experiments (until 2.0 V versus saturated calomel electrode) were used. Very high resistances for the charge transfer (0.14-0.28 GΩ) and very low current density values (5 × 10–14 -5 × 10–11 A cm–2) were estimated by EIS and potentiodynamic polarization, respectively, for coatings prepared at 200-400 °C. Thus, the coatings prepared in this study by the sol–gel method appear as an efficient treatment for the corrosion protection of aluminum alloys |
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| Acervo Geral | Todos os itens |
| Itens na Biblioteca | IQSC-Inst. Química São Carlo |
| Unidade USP | IQSC -- INST DE QUÍMICA DE SÃO CARLOS |
| | IQSC -- INST DE QUÍMICA DE SÃO CARLOS |
