Thin Films Produced on 5052 Aluminum Alloy by Plasma Electrolytic Oxydation with Red Mud-containing Electrolytes

Autor(es)

Sottovia, Livia ; Pereira Antunes, Maria Lucia ; Antonio, Cesar Augusto ; Rangel, Elidiane Cipriano ; da Cruz, Nilson Cristino

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 17, n. 6, p. 6-pg., 2014-11-01.

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. (AU)

• Processo FAPESP: 11/23733-8 - Revestimentos cerâmicos protetivos para ligas de alumínio
• Beneficiário: Nilson Cristino da Cruz
• Modalidade de apoio: Auxílio à Pesquisa - Regular