Deposição de filmes finos a base de titânio sobre aço inoxidável aISI 304 e suas aplicações tecnológicas e biotecnológicas

Abstract

Titanium-based thin films are an excellent alternative for improving the surface properties of metallic materials such as stainless steels. In general, coatings of this class provide high hardness, resistance to wear and corrosion, which make them attractive for technological applications, and also improve the biological surface properties of materials such as biocompatibility, bactericidal and cell proliferation, allowing them to be used in biomedical applications. This work is divided into four chapters. The first chapter presents a brief review of the deposition of titanium-based thin films using physical vapor deposition (PVD) processes, highlighting the types of films, deposition techniques and the main results and applications. The second chapter presents a study of the influence of different types of titanium cathodic cage plasma deposition configuration on the mechanical, tribological and corrosion properties of AISI 304 stainless steel. The third chapter deals with the deposition of titanium and niobium nitride thin films on AISI 304 stainless steel by varying the cage arrangement and treatment temperature in the cathodic cage plasma deposition technique, in order to evaluate the effects on the morphology, adhesion, wettability and biological properties of the deposited thin films. Finally, chapter four presents a preliminary study on the incorporation of titanium dioxide nanoparticles into thin films deposited on AISI 304 stainless steel using the cathodic cage plasma deposition technique in order to analyze the influence on the mechanical properties, wettability and bacterial response of the deposited thin films.