한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제44권6호
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  • Pages.291-296
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  • 2007
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Fabrication of Porous Al2O3-(m-ZrO2) Composites and Al2O3-(m-ZrO2)/PMMA Hybrid Composites by Infiltration Process

  • Lee, Byong-Taek (Department of Biomedical Engineering and Materials, School of Medicine, Soonchunhyang University) ;
  • Quang, Do Van (Department of Biomedical Engineering and Materials, School of Medicine, Soonchunhyang University) ;
  • Song, Ho-Yeon (Department of Microbiology, School of Medicine, Soonchunhyang University)
  • 발행 : 2007.06.30
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초록

Porous $Al_2O_3-(m-ZrO_2)$ composites were fabricated by pressureless sintering, using different volume percentages (40% - 60%) of poly methyl methacrylate (PMMA) powders as a pore-forming agent. The pore-forming agent was successfully removed, and the pore size and shape were well-controlled during the burn-out and sintering processes. The average pore size in the porous $Al_2O_3-(m-ZrO_2)$ bodies was about $200\;{\mu}m$ in diameter. The values of relative density, bending strength, hardness, and elastic modulus decreased as the PMMA content increased; i.e., in the porous body (sintered at $1500^{\circ}C$) using 55 vol % PMMA, their values were about 50.8%, 29.8 MPa, 266.4 Hv, and 6.4 GPa, respectively. To make the $Al_2O_3-(m-ZrO_2)$/polymer hybrid composites, a bioactive polymer, such as PMMA, was infiltrated into the porous $Al_2O_3-(m-ZrO_2)$ composites. After infiltration, most of the pores in the porous $Al_2O_3-(m-ZrO_2)$ composites, which were made using 60 vol % PMMA additions, were infiltrated with PMMA, and their values of relative density, bending strength, hardness, and elastic modulus remarkably increased.

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피인용 문헌

  1. Composition Dependence and Optical Properties of Polymethyl Methacrylate/Alumina Nanocomposite in the IR Region Determined by Kramers-Kronig Relation vol.54, pp.2, 2017, https://doi.org/10.4191/kcers.2017.54.2.01
  2. Fabrication of bioglass infiltrated Al2O3–(m-ZrO2) composites vol.20, pp.1, 2009, https://doi.org/10.1007/s10856-008-3568-1