| 자연물의 미세구조를 활용한 다공성 인산칼슘 제조 |
| 이상진, 이훈철 |
| 국립목포대학교 신소재공학과 |
| Fabrication of Porous Calcium Phosphate by Using a Pre-Form of Nature Material |
| Sang-Jin Lee, Hoon-Cheol Lee |
| Department of Advanced Materials Science and Engineering, Mokpo National University |
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| ABSTRACT |
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Porous calcium phosphates were successfully fabricated by using a cuttlefish bone. The cuttlefish bone, which is composed of $CaCO_3$, showed a special porous microstructure containing uniform-sized voids. In this study, the pre-forms infiltrated distilled phosphoric acid were sintered at $1200^{circ}C$ in an air atmosphere. The porous microstructure of the pre-forms was kept their original pattern after sintering with a synthesis of calcium phosphate. The obtained porous calcium phosphate, sintered at $1200^{circ}C$ for 3 h at 17% concentration of phosphoric acid, showed uniform open pores of 150 ${mu}m$ in size and $beta$-TCP phase in the XRD patterns. Above 16% concentration, CaO phase, derived from the decomposition of $CaCO_3$, decreased gradually in the sintered samples, and the measured Ca/P ratios of the samples prepared from 16% and 18% concentration were 1.67 and 1.43, which are close to stoichiometric HA (1.66) and $beta$-TCP (1.50). |
| Key words:
Cuttlefish bone, Calcium phosphate, Phosphoric acid, Porous microstructure |
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