Abstract
Ti-6Al-4V alloy has been used for bone implant materials. The porous Ti-6Al-4V lowers the mechanical misfit and prevents the implant loosening between bone and metal implant. The influence of sintering parameters, i.e., heating rate, sintering temperature, pressure, space holder size, and its distribution to the formation of both micro and macro- porosity is investigated. The initially developed image analysis of samples was used to quantitatively analyze the influence of process control agent (PCA) on the distribution of macro-pores. From the SEM results and samples relative density, it is found that the main parameter to control in the solid-state space holder method is space holder distribution, sintering pressure, and sintering temperature. Additionally, the most effective condition to produce less micro-porosity and more interconnectivity between macro-pore is the utilization of 10 wt% ethanol as PCA and sintering at 700 °C, 60 MPa.
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