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http://dx.doi.org/10.4191/kcers.2011.48.5.348

Fabrication of Silicon Nitride Ceramics by Gel-Casting and Microwave Gas Phase Reaction Sintering(I) : Silicon Gel-Casting  

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)
Publication Information
Journal of the Korean Ceramic Society / v.48, no.5, 2011 , pp. 348-353 More about this Journal
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
Gel-casting; Silicon powder; Organic polymers; Acrylamide; Machinable green body;
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1 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).   DOI
2 G. G Odian, ''Principles of Polymerization," 4th ed., Ch. 3. Radical Chain Poly- merization, pp. 198-349, John Wiley & Sons, Inc., 2004.
3 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).   DOI
4 R. S. Farinato and P. L. Dubin, "Colloid-Polymer Interactions: From Fundamentals to Practice," pp. 118-120, John Wiley & Sons, Inc., 1999.
5 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).   과학기술학회마을
6 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).   과학기술학회마을
7 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).   과학기술학회마을   DOI
8 O. O. Omatete, M. A. Janney, and R. A. Strehlow, "Gelcasting-New Ceramic Forming Process," Am. Ceram. Soc. Bull, 70 [10] 1641-49 (1991).
9 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).
10 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).   과학기술학회마을