Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

The Investigation of Reaction Parameters on the Reactivity in the Preparation of SiC by SHS

자전연소합성법에 의한 SiC 분말 제조시 반응변수의 영향

  • Shin, Chang-Yun (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Won, Hyung-Il (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Nersisyan, Hayk (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Won, Chang-Whan (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University)
  • 신창윤 (충남대학교 급속응고신소재연구소) ;
  • 원형일 (충남대학교 급속응고신소재연구소) ;
  • ;
  • 원창환 (충남대학교 급속응고신소재연구소)
  • Published : 2006.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The preparation of SiC powder by SHS in the system of $SiO_2-Mg-C$ was investigated in this study. The effects of various processing parameters such as the initial pressure of inert gas in reactor, the content of Mg and C in mixture and the size of $SiO_2$ particles on the synthesis of SiC by SHS methode were investigated. The minimum initial pressure of inert gas in reactor for SHS reaction in this system was 5 atm, and as the pressure increased, and the concentration of unreacted Mg decreased. At 50 atm of the initial inert gas pressure in reactor, the optimum composition for the preparation of pure SiC was $SiO_2+2.5Mg+1.2C$. SiC powder synthesized in this condition had a mixture of ${\alpha}-SiC\;and\;{\beta}-SiC$ with an irregular shape and the particle size of $0.5{\sim}0.8{\mu}m$.

Keywords

References

  1. M. J. Chpper and R. S. Millman, 'The Fabrication of Ceramic-Coated Carbon Fibre Duplex Elements,' J. Mat. Sci., 9 1933 (1974) https://doi.org/10.1007/BF00540542
  2. K. M. Rigtrup and R. A. Culter, 'Synthesis of Submicron Silicon Carbide Powder,' pp. 17-33 in Ceramic Transactions, Vol. 2, Silicon Carbide. Ed. by W. S. Young, G. L. McVay, and G. E. Pike, American Ceramic Society, Westerville, OH, 1987
  3. J. G. Lee, 'Carbide and Nitride Ceramics by Carbothermal Reduction of Silica,' Ph. D. Dissertation, University of Utah, 1976
  4. B. W. Jong, 'Formation of Silicon Carbide from Silica Residues and Carbon,' Bull. Am. Ceram. Soc., 58 [8] 788-89 (1979)
  5. A. G. Merzhanov, 'Reviews : Fundamentals, Acheivements, and Perspectives for Development of Solid-Flame Combustion,' Russ. Chem. Bull., 46 1 (1997) https://doi.org/10.1007/BF02495340
  6. A. G. Merzhanov, 'Self-Propagating High Temperature Synthesis : Twenty Years of Research and Findings,' (1989)
  7. J. Kiser and R. M. Spriggs, 'Soviet SHS Technology : A Potential U. S. Advantage in Ceramics,' Ceram. Bull., 68 [6] 1165-67 (1989)
  8. M. H. Ryu, J. H. Lee, C. W. Won, and H. Nersisyan, 'Synthesis and Characteristics of LiCoO2 Powders Prepared by SHS Process(in Korean),' J. Kor. Ceram. Soc., 41 [5] 388- 94 (2004) https://doi.org/10.4191/KCERS.2004.41.5.388
  9. I. H. Song, J. Y. Yun, and H. D. Kim, 'Fabrication of Porous $MoSi_2$ Material for Heating Element through Self-Propagating High Temperature Synthesis Process(in Korean),' J. Kor. Ceram. Soc., 41 [1] 62-8 (2004) https://doi.org/10.4191/KCERS.2004.41.1.062
  10. K. R. Han, D. I. Kang, and C. S. Kim, 'Preparation of $B_4C-Al_2O_3$ Composite Powder by Self-Propagating High Temperature Synthesis(SHS) Process Under High Pressure(in Korean),' J. Kor. Ceram. Soc., 40 [1] 18-23 (2003) https://doi.org/10.4191/KCERS.2003.40.1.018
  11. K. S. Yun, J. H. Lee, H. Nersisyan, C. W. Won, and H. S. Jung, 'Preparation of ${\alpha}-Si_3N_4$ Powder in Reaction System Containing Molten Salt by SHS-Part 1. Synthesis of Powder( in Korean),' J. Kor. Ceram. Soc., 41 [3] 235-42 (2004) https://doi.org/10.4191/KCERS.2004.41.3.235