The influence of difference sintering temperature: 900°C, 1000°C, 1100°C, 1200°C and 1300°C on the microstructure and mechanical properties of a biomedical Ti–35Nb-2.5Sn-15HA (wt.%) composite was investigated with regard to densification, porosity and hardness. Ti composite process was performed on elemental metal powders by blend the powder mixture at a rotating speed of 200 rpm mixing for 10 min and then sintered with difference temperature. The composites produced were then subjected to the following test: densification, Vickers micro hardness, microstructure by using SEM and X-ray diffraction analysis. Result indicated that the densification and Vickers micro hardness shown a decrease trend with the increasing of temperature due to the increasing trend of porosity up to 73%.

The effect of hydroxyapatite (HA) particle composition on the microstructure, Vickers microhardness, relative density and phases of β titanium nanocomposite prepared by powder metallurgy method were investigated experimentally. Hydroxyapatite particle in the range of 5 wt% to 25 wt% were mixed with Ti-35Nb-2.5Sn particles. The samples were pressed at 111 MPa and sintered at 900°C for 2 hours in a vacuum furnace. Result shows that by increasing the hydroxyapatite composition from 5 wt% to 15 wt %, the relative density and Vickers mirohardness increased. Phase analysis of raw materials was studied by XRD analysis and microstructure of composite by SEM.