In this study, preparation of porous calcium phosphate was involved the addition of sodium
di-hydrogen phosphate, NaH2PO4 and di-sodium hydrogen phosphate, Na2HPO4 into the
raw calcium phosphate powder. The sodium hydrogen phosphates salt was act as the
porosity agent for the bio-ceramic samples preparation. This method using sodium
phosphates salt produced samples with 20-70% porosities. After sintering the sample
above 700°C with 4 hours soaking time, results showed that open-pores structure in the
range of 1 to 400µm in size were obtained. The pores structure and sizes were depending
on the percent addition of the additive and the level of sintering temperature. The
compressive strength of porous samples was approximately ranging between 14.38 to
103.42 MPa
