Abstract: In this study, porous β-tricalcium Phosphate (β-TCP) bioceramic is prepared by the following steps. First, calcium nitrate and 2-phosphonic acid-1,2,4-tricarboxylic acid (PBTC) are used as raw materials to synthesize the precursor; second, β-TCP power was prepared by dehydration concentration and high temperature sintering; third, β-TCP power is taken as the matrix, stearic acid as porogen and PVA as binder to prepare the moudles by press molding; finally, β-TCP bioceramic is prepared by sintering of the moudles. The compositions of the β-TCP bioceramic are analyzed using X-ray diffraction analysis, scanning electron microscopy and EDX spectroscopy. Degradation experiments are carried out using the specimens with four levels of porogen, 15%, 20%, 25% and 30% respectively. Results show that the specimen with 30% of porogen has the best degradation performance. EDX analysis and scanning electron microscopy observation confirm the generation of hydroxyapatite materials on the surface of the β-TCP bioceramic.

Key words: inorganic non-metallic materials, β-tricalcium phosphate, sintering, porous, degradation, X-ray diffraction