| 조성 경사구조를 갖는 다공질 Al2O3-(t-ZrO2)/HAp 복합체의 제조 및 In-Vitro 실험 |
| 김기호, 김영희1, 송호연1, 이병택 |
공주대학교 신소재공학부
1순천향대학교 의과대학 미생물학교실 |
| Fabrication of Functionally Gradient Porous Al2O3-(t-ZrO2)/HAp Composites and their In-Vitro Study |
| Ki-Ho Kim, Young-Hee Kim1, Ho-Yeon Song1, Byong-Taek Lee |
School of Advanced Materials Engineering, Engineering College, Kongju National University
1Department of Microbiology, School of Medicine, Soonchunhyang University |
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| ABSTRACT |
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Functionally gradient porous $Al_2O_3-(t-ZrO_2)/HAp$ composites consist of 3 layers were fabricated using the multi-pass extrusion process at the various temperatures. The continuous pores were homogeneously formed in the $2^{nd}$ passed samples and their size was about $180{mu}m$ in diameter. In the porous composites sintered at $1200-1400^{circ}C$, the relative density and bending strength increased with the sintering temperature. The maximum values of relative density and bending strength in the $2^{nd}$ passed $Al_2O_3-(t-ZrO_2)/HAp$ composites were 62.2% and 107.8 MPa, respectively. In order to investigate the growth behavior of osteogenic cells on the functionally gradient porous $Al_2O_3-(t-ZrO_2)/HAp$ composites, an in vitro test was performed, using human osteoblast-like MG-63 cells. The cells were well attached and grown on the rough surface of the inside of the functionally gradient porous body. |
| Key words:
$Al_2O_3-(t-ZrO_2)/HAp$ composites, Functionally gradient, Multi-pass extrusion, In-vitro |
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