Corrosion behaviour of Ti-Nb-Ag powder metallurgical alloys and their potential application as biomaterials

Abstract

[EN] One of the most important characteristics of medical devices are materials and their properties. Specially, the corrosion resistance, which is considered very relevant. Furthermore, several alloys have been developed by powder metallurgic processes to control the composition. Accordingly, the propose of this work is to study the influence in Ti-35Nb alloys of the addition of silver (X=0, 2, 4 and 6 wt%) respect to the mechanical properties and the corrosion performance, in solutions similar to human body fluids. Corrosion resistance has been analyzed by ion release as well as polarization in artificial saliva Fusayama [1] and Hartmann solution as electrolytes. Likewise, the microstructural characteristics and mechanical properties have been studied. The results obtained demonstrate the viability of these Ti35NbXAg alloys for their possible use as biomedical implants.