Effect of Sintering Temperature on Microstructure and Mechanical Properties of Ti-Nb-Sn-HA Composites Produced by Powder Metallurgy

Abstract

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%.