Hydroxyapatite (HA)/β-tricalcium phosphate (β-TCP) composites attracts attentions as bone implant materials. Mixing of HA and β-TCP powder is one of the fabrication methods of HA/β-TCP. This method enables the control the ratio of content of β-TCP easier. However, it is difficult to obtain dense composites. In this study, spark plasma sintering (SPS) was used for improving sinterability of HA/β-TCP composites. The sinterability is evaluated by relative density and grain size measurements and composition of sintering body. In comparison with pressure-less sintering, relative density of the composites was significantly increased without grain growth. Sintering additives inhibited phase transformation. It was suggested that sinterability of HA/β-TCP composites was improved by SPS.
