Fabrication and compressive properties of Ti6Al4V implant with honeycomb-like structure for biomedical applications

Purpose - The purpose of this paper is to verify the feasibility and evaluate the compressive properties of Ti6Al4V implants with controlled porosity via electron beam melting process. This process might be a promising method to fabricate orthopedic implants with suitable pore architecture and matched mechanical properties. Design/methodology/approach - Ti6Al4V implants with controlled porosity are produced using an electron beam melting machine. A scanning electron microscope is utilized to examine the macro-pore structures of the Ti6Al4V implants. The compressive test is performed to investigate the mechanical properties of the porous implants. Findings - The fabricated samples show a fully interconnected open-pore network. The compressive yield strength of the Ti6Al4V implants with the porosity of around 51 percent is higher than that of human cortical bone. The Young's modulus of the implants is similar to that of cortical bone. Research limitations/implications - The surface of samples produced by electron beam melting process is covered with loosely spherical metal particles. Polishing and ultrasonic cleaning have to be used to remove the loose remnants. Originality/value - This paper presents the potential application in the fabrication of orthopedic or dental implants using electron beam melting process.