Ref.: MceBi02-011
Apresentador: Cristian Cley Paterniani Rita
Autores (Instituição): Rita, C.C.(Faculdade de Tecnologia de Pinda/Ribeirão Preto); Rosa, J.L.(Fatec Pindamonhangaba); Miranda, F.S.(Instituto Tecnológico de Aeronáutica); Montoro, S.R.(Fatec Pindamonhangaba); Petraconi, G.(INSTITUTO TECNOLÓGICO DE AERONÁUTICA);
Resumo:
Surface treatment of materials is essential to modify their characteristics without compromising their internal properties, expanding their application possibilities. Nanotechnology plays a crucial role in this process, allowing for the manipulation of microstructure at the nanoscale, which directly influences the reactivity and solubility of materials. This approach is particularly relevant in biomaterials such as implants, where improving biological interaction is critical for clinical success. In the context of biomaterials like dental and orthopedic implants, surface modification plays a crucial role in enhancing biocompatibility and osseointegration. These characteristics are essential to facilitate the interaction of these materials with biological tissues, ensuring an adequate organism response and increasing implant durability. Additionally, surface treatment is of paramount importance in various industrial sectors, such as the aluminum alloys industry, where corrosion prevention is a constant challenge, requiring the study and development of alternative coatings to minimize damage and prolong material lifespan. A practical example of this process is the treatment of Titanium (Ti) using Plasma Electrolytic Oxidation (PEO), aiming not only to improve its biological interaction but also to expand its applications in various fields. The preparation of titanium samples for the growth of TiO2 coatings was carefully conducted, including steps like plasma electrolytic anodization and sanding to ensure a uniform surface. Similarly, the formulation of electrolytic solutions was detailed, with the precise proportion of C3H8O3, distilled H2O, and NH4F to maintain an adequate pH around 5. These procedures were fundamental to create ideal conditions for the efficient formation of TiO2. The metallographic analysis of nanostructured material was meticulously performed using advanced techniques like SEM-FEG, EDS, and X-ray diffractometer, resulting in the precise identification of TiO2 presence on sample surfaces. The obtained results validated the formation of desired nanostructures, demonstrating the efficacy of the employed methods. Particularly, sample 4 stood out by presenting the formation of desired nanostructures, as confirmed by SEM-FEG and EDS analyses revealing the presence of TiO2 nanotubes on the surface. The Plasma Electrolytic Oxidation process proved highly efficient in the formation of structured TiO2 nanotubes. Parameter optimization such as exposure time and electrode distance was crucial to achieve this result. With further in-depth analyses and fine parameter adjustments, it is expected to further improve the process efficiency, making it even more promising for future applications in various engineering and biomedical sciences fields.