Fabrication and Characterization of Porous Beta Titanium Alloy

Abstract

Due to its excellent biocompatibility, low density, high strength, and good corrosionresistance, titanium alloys have been used in medical applications for a long time. However, the mismatch in elastic modulus between titanium alloys and bone would cause “stress shielding effect”, which would lead to implant’s failure. To tackle this problem, porous NiTi alloys have been studied. Nickel has been proved toxic to human body. We have successfully prepared non-nickel porous TiNbZrTa, and demonstrated that porous TiNbZrTa alloys are promising implant biomaterials for bone tissue by virtue of their appropriate mechanical properties, highly porous structure and excellent biocompatibility.