Effect of bactericidal elements addition on the microstructure and properties of the alloy Ti34Nb

Autores UPV
Año
CONGRESO Effect of bactericidal elements addition on the microstructure and properties of the alloy Ti34Nb

Abstract

The functionalization of β-Ti alloys adding small amounts of bactericidal elements is interesting for biomedical applications. Alloying pure titanium with highly biocompatible elements such as Nb or Ta, stabilizes the β phase of the titanium alloy although they cause associated problems during the alloy fabrication due to their refractory nature. This work studies the effect of small additions of Ag and Cu (1.5 to 3 wt.%) on the microstructure and mechanical properties of the Ti34Nb (wt.%) alloy. The occurrence of the α phase in the form of sheets inside the β phase grains increases with the addition of Cu. It also decreases the open porosity and increases the closed porosity The addition of Ag, on the contrary, does not influence the stabilization of the β phase while the density, thus the total porosity, is maintained. The mechanical properties are maintained with the Ag addition and decrease with Cu addition. The elastic modulus of the Ti34Nb alloy increases with the Cu addition and decreases with the Ag one. Therefore, silver addition does not affect the microstructure and mechanical properties of the Ti34Nb and can be considered a good alloying element to provide antibacterial properties at the titanium alloy without losing performance.