Preparation and Mechanical Properties of Porous Ti-5Ag Alloy

In this study,porous Ti-5 Ag alloy was fabricated by powder metallurgy approach with Ti and Ag powders as raw materials and different content of NH₄HCO₃ as space holder.The results show that the phase composition of the porous Ti-5 Ag alloy is α-Ti. With increase of NH₄HCO₃ addition,the density of the alloy gradually decreases,and its porosity increases.Morphological observations show that with the porosity increased the number of macropores of Ti-5 Ag alloy raises and the connectivity during pores also increases.Meanwhile,both of the elastic modulus and compressive strength of the porous Ti-5 Ag alloy are reduced with increase of porosity,according to the mechanical tests. The mechanical properties of porous Ti-5 Ag alloy could be adjusted to match with the human bones by controlling the amount of NH₄HCO₃,which has the potential to be used as a porous antimicrobial implant for orthopedics.