Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
FORMATION OF TIO2 NANOSTRUCTURE BY PLASMA ELECTROLYTIC OXIDATION
Submission Author:
Cristian Cley Paterniani Rita , SP
Co-Authors:
Cristian Cley Paterniani Rita, ANDRE HENRIQUE FERREIRA, JOAO PAULO BARROS MACHADO, Jorge Rosa, FELIPE MIRANDA, GILBERTO PETRACONI
Presenter: Cristian Cley Paterniani Rita
doi://10.26678/ABCM.COBEM2021.COB2021-2346
Abstract
The use of plasma technology has provided an advance in surface engineering, especially when the objective is to protect a substrate by applying a coating. For this reason today it is possible to find the application of plasma in various areas of the industry, such as electronics, aerospace, metallurgy, biomedicine, etc. Titanium and its alloys have inert, bioinert characteristics that favor greater chemical stability compared to other metals. Biocompatibility is the main advantage of this material, which can be used as biomaterials for the production of prostheses and implants, to replace tissues and/or organs in the dent medical areas. Even so, the superficial modification of biomaterials is necessary to improve their bone integration and the degree of biocompatibility of the implant with the bone tissue, which can be used in several medical applications. The Plasma Electrolytic Oxidation (PEO) is electrochemical processes that occur at the electrode and electrolyte solution interface, when the applied voltage is above a certain critical value, usually several hundred volts. The simultaneous action of the electrical discharge with the electrochemical reactions, induce new physical-chemical mechanisms that generate oxide layers with unique properties. PEO has been used to deposit ceramic coatings in Al, Ti, Nb, Stainless Steel, among others. The main characteristic of the PEO coatings is the porous structure, which provides good biological fixation to the surrounding tissue due to bone growth into the porous surface after implantation.
Keywords
Plasma, Electrolytic, oxidation, surface, Modification, Biocompatibility structured nanotubes, Nanomaterials
