Evaluation of the mechanical behavior of porous pieces of titanium, obtained by powder metallurgy and superactivated carbon as spacer

Titanium prosthetic implants have an elastic modulus greater than that of bone, absorbing the mechanical load, causing the shielding effect due to mechanical stresses. The biomaterial is required to have a minimum modulus of stiffness of 3 GPa, compressive stress between 2 to 12 MPa, and flexural stress between 10 to 20 MPa, which are values for cancellous femoral bone. A method to reduce the elastic modulus is to create pores in the titanium piece by means of the powder metallurgical method and super activated carbon as a spacer, by this method 27 rectangular section pieces were obtained for the bending test (UNE-EN ISO-3325) and 27 of circular section for compression test (ASTM E9-89). This research achieved a bending stiffness modulus of 0,017 GPa and a compression stiffness modulus of 4,14 GPa, values close to the mechanical properties of trabecular bone.