Thin films produced on 5052 aluminum alloy by plasma electrolytic oxydation with Red Mud-containing Electrolytes

Materials Research

Elidiane Cipriano Rangel¹  César Augusto Antonio¹  Maria Lúcia Pereira Antunes¹  Nilson Cristino da Cruz¹  Lívia Sottovia¹ 

[1] Universidade Estadual Paulista;

关键词: plasma electrolytic oxidation;    ceramic coatings;    red mud;   

DOI  :  10.1590/1516-1439.283414

来源: DOAJ

【 摘 要 】

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/cm² and films as thick as 9.0 µm have been obtained. XRD patterns have clearly shown the incorporation of species from the red mud on the coating.

【 授权许可】

Unknown