Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Functionally Gradient Porous Al2O3-(t-ZrO2)/HAp Composites and their In-Vitro Study

조성 경사구조를 갖는 다공질 Al2O3-(t-ZrO2)/HAp 복합체의 제조 및 In-Vitro 실험

  • Kim, Ki-Ho (School of Advanced Materials Engineering, Engineering College, Kongju National University) ;
  • Kim, Young-Hee (Department of Microbiology, School of Medicine, Soonchunhyang University) ;
  • Song, Ho-Yeon (Department of Microbiology, School of Medicine, Soonchunhyang University) ;
  • Lee, Byong-Taek (School of Advanced Materials Engineering, Engineering College, Kongju National University)
  • 김기호 (공주대학교 신소재공학부) ;
  • 김영희 (순천향대학교 의과대학 미생물학교실) ;
  • 송호연 (순천향대학교 의과대학 미생물학교실) ;
  • 이병택 (공주대학교 신소재공학부)
  • Published : 2006.08.01
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Abstract

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.

Keywords

References

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