Estudo das propriedades de revestimentos à base de nióbio e nanopartículas de prata para usos biomédicos e aeronáuticos

Abstract

Surface engineering has established itself as a fundamental strategy for enhancing the performance of materials in critical environments, particularly in the biomedical and aerospace sectors, where resistance to corrosion, wear, and microbial contamination is essential. In this context, the aim of this work was to develop and characterize niobium-based coatings incorporating silver nanoparticles, targeting applications in the biomedical and aerospace fields. This work aimed to develop and characterize niobium-based coatings incorporating silver nanoparticles, targeting applications in the biomedical and aeronautical sectors. NbN and Nb2O5 coatings were obtained by magnetron sputtering and subsequently modified through ion plating with silver ions. The results showed that the films exhibit promising physicochemical and biological properties. In the biomedical field, the coatings demonstrated excellent biocompatibility, corrosion and wear resistance, and bactericidal activity, being effective in preventing biofilm formation without presenting cytotoxicity. In the aeronautical sector, the coatings showed good corrosion resistance in simulated environments and also reduced fungal adhesion. The research confirms the effectiveness of surface engineering as a sustainable and efficient approach to mitigating corrosion, wear, and microbial contamination in critical environments. Future studies may focus on long-term evaluations and industrial-scale feasibility. [resumo fornecido pelo autor]