| 가압소결에 의한 β-TCP/TiO2복합체의 제조 |
| 정항철, 이종국 |
| 조선대학교 신소재공학과 |
| Preparation of β-TCP/TiO2 Composite by Hot-Pressing |
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| ABSTRACT |
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Hydroxyapatite(HA)/TiO$_2$ composite powders were prepared by mixing of spherical TiO$_2$ (10-15 nm, 500 nm) and needle-shaped HA (50-70 nm, 120-250 nm) powders which had been synthesized through precipitation, sol-gel and hydrothermal methods. From the three types of starting composite powders (HA/TiO$_2$ wt% of 75/25, 50/50, and 25/75), dense $beta$-TCP/TiO$_2$ composites were prepared by hot-pressing at 800-100$0^{circ}C$ for 30 min under the pressure of 30 ㎫ in Af atmosphere. The $beta$-TCP/TiO$_2$ composites showed different microstructures and sintering densities depending on their powder morphology, composition and sintering temperature. With increasing the sintering temperature and the content of TiO$_2$, sintered density was increased and microstructure became more homogeneous. ⴊ砀 Ѐ〰㐻ἀ䍯浰畴敲⁓捩敮捥…⁉湦潲浡瑩潮 |
| Key words:
$\beta$-TCP/$TiO_2$, Hydroxyapatite, Composite, Hot-pressing |
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