the object of this study was to produce absorbable biomaterials containing tricalcium phosphate (TCP) and hydroxyapatite (HA). Naphtalene was used as a pore forming agent. The conventional pressing and sintering were utilized to produced the disc shape samples. The sintering temprature and the applied pressure were selected as the variable factors. The phase composition and chemical structure analysis were performed using XRD and FTIR. The size and distribution of the porosities as well as the connection of porosities with each other were studied by SEM. The sintered sampleds consisted of the HA and TCP phase. No impurities, remaining from the additives were detected in the sintered samples. The optimum sintering temprature and applied pressure parameters were 1200^oC and 220 MPa, respectively. The pores of 50-300 micrometers size illustrating the rough enough internal surfaces, were obtained for potential use in hard tissue engineering.

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