Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Silicon Nitride Ceramics by Gel-Casting and Microwave Gas Phase Reaction Sintering(I) : Silicon Gel-Casting

Gel-Casting 및 마이크로파 기상반응소결에 의한 질화규소 세라믹 제조에 대한 연구(I) : Gel-Casting에 의한 실리콘 성형체의 제조

  • Bai, Kang (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Woo, Sang-Kuk (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Han, In-Sub (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Seo, Doo-Won (Energy Materials Research Center, Korea Institute of Energy Research)
  • 배강 (한국에너지기술연구원 에너지소재연구센터) ;
  • 우상국 (한국에너지기술연구원 에너지소재연구센터) ;
  • 한인섭 (한국에너지기술연구원 에너지소재연구센터) ;
  • 서두원 (한국에너지기술연구원 에너지소재연구센터)
  • Received : 2011.08.03
  • Accepted : 2011.08.31
  • Published : 2011.09.30
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Abstract

By gel-casting, the silicon-polymer green bodies were prepared for silicon nitride ceramics, sintered by microwave gas phase reaction. Considering the viscosity and the idle time of slurries, we decided the operational conditions of related processes, and the optimum concentrations of raw materials powders, organic monomers, cross-linker, dispersant, initiator, and catalyst. So we could get the machinable green bodies, having about 50 MPa of bending strength without cracks by selecting drying conditions carefully.

Keywords

References

  1. O. O. Omatete, M. A. Janney, and R. A. Strehlow, "Gelcasting-New Ceramic Forming Process," Am. Ceram. Soc. Bull, 70 [10] 1641-49 (1991).
  2. A. C. Young, O. O. Omatete, M. A. Janney, and P. A. Mennchhofer, "Gelcasting of Alumina," J. Am. Ceram. Soc., 77 [3] 612-18 (1991).
  3. J. S. Lee, J. H. Mun, B. D. Han, D. S. Park, and H. D. Kim, "Effect of Raw-Si Particle Size on the Mechanical Properties of Sintered RBSN (in Korean)," J. Kor. Ceram. Soc., 38 [8] 740-45 (2001).
  4. T. N. Tiegs, J. O. Kiggans, and K. L. Ploetz, "Application of Microwave Heating for Fabrication of Silicon Nitride Ceramics,'' Ceram. Eng. Sci. Proc., 14 [9] 744-52 (1993). https://doi.org/10.1002/9780470314234.ch7
  5. G. G Odian, ''Principles of Polymerization," 4th ed., Ch. 3. Radical Chain Poly- merization, pp. 198-349, John Wiley & Sons, Inc., 2004.
  6. O. Nermin and O. Oguz, "Influence of the Initiator System on the Spatial Inhomo- geneity in Acrylamide-based Hydrogels," J. Appl. Polymer Sci., 103 [5] 3228-3237 (2007). https://doi.org/10.1002/app.24977
  7. R. S. Farinato and P. L. Dubin, "Colloid-Polymer Interactions: From Fundamentals to Practice," pp. 118-120, John Wiley & Sons, Inc., 1999.
  8. C. J. Oh and H. L. Lee, "Microstructures and Drying of the Alumina Green Body by the Gel-Casting Method (in Korean)," J. Kor. Ceram. Soc., 31 [12] 1467-74 (1994).
  9. B. H. Ryu, E. Y. Kim, and J. D. Lee, "Acrylamide Polymerization on Ceramic Powders(I) : The Process Control of $Si_3N_4$ Gelcasting by Polymerization of Acrylamide (in Korean)," J. Kor. Ceram. Soc., 36 [2] 178-85 (1998).
  10. K. T. Hwang and D. S. Cheong, "Effect of Additives on Mechanical Properties of Alumina Bushing Fabricated by Gel-casting," J. Kor. Ceram. Soc., 46 [6] 653-56 (2009). https://doi.org/10.4191/KCERS.2009.46.6.653

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