Thin films produced on 5052 aluminum alloy by plasma electrolytic oxydation with red mud-containing electrolytes
Data
2014-11-01
Autores
Sottovia, Livia [UNESP]
Pereira Antunes, Maria Lucia [UNESP]
Antonio, Cesar Augusto [UNESP]
Rangel, Elidiane Cipriano [UNESP]
Cruz, Nilson Cristino da [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Univ Fed Sao Carlos, Dept Engenharia Materials
Resumo
In this paper, we propose the production of ceramic protective thin films by plasma electrolytic oxidation using red mud-containing electrolytes. The treatments were performed through the application of pulsed voltage (600 V, 200 Hz) during 300 seconds to aluminum samples immersed in electrolytic solutions with 5 g of red mud per liter of distilled water. The coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS) and contact angle and surface energy measurements. The final current density during the experiments was 0.05 A/cm(2) and films as thick as 9.0 mu m have been obtained. XRD patterns have clearly shown the incorporation of species from the red mud on the coating.
Descrição
Palavras-chave
Plasma electrolytic oxidation, Ceramic coatings, Red mud
Como citar
Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 6, p. 1404-1409, 2014.