Fabricação e caracterização de ligas de Titânio-Zircônio-Vanádio para aplicações em ambientes expostos ao hidrogênio

Abstract

The research proposes the development and manufacture of titanium-zirconium alloys with alloying elements capable of inhibiting, or reducing the formation of hydrides, in these materials. Such alloys have the potential for industrial applications in corrosive environments with the presence of a high concentration of hydrogen, for any components of interest to the application. This project seeks to integrate theoretical thermodynamic simulations with further experimental development of the alloy. Theoretical combinations of alloys were evaluated and the most interesting ones were selected for manufacturing and testing. The main focus was on conducting electrochemical hydrogen permeation experiments, in addition to characterization of the alloy with x-ray diffraction techniques and scanning electron microscopy. The experiments generated satisfactory results, where the electrochemical permeation allowed to calculate the hydrogen diffusion coefficients in the alloys, and the x-ray diffraction analyzes combined with those of scanning electron microscopy, allowed to evaluate the phases present in the alloys.