Sottovia, Livia [UNESP]Pereira Antunes, Maria Lucia [UNESP]Antonio, Cesar Augusto [UNESP]Rangel, Elidiane Cipriano [UNESP]Cruz, Nilson Cristino da [UNESP]2015-11-032015-11-032014-11-01Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 6, p. 1404-1409, 2014.1516-1439http://hdl.handle.net/11449/130266In 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.1404-1409engPlasma electrolytic oxidationCeramic coatingsRed mudArtigo10.1590/1516-1439.283414S1516-14392014000600007WOS:000349766900006Acesso abertoS1516-14392014000600007.pdf7157327220048138