Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect Of Bedding on the Microstructure of Si3N4 with Ultrafine SiC

초미립 SiC가 첨가된 질화규소에서 미세구조에 미치는 Bedding의 영향

  • 이홍한 (성균관대학교 재료공학과) ;
  • 김득중 (성균관대학교 재료공학과)
  • Published : 2003.02.01
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Abstract

The effect of bedding on the microstructure of $Si_3N_4$ added with ultra-fine SiC was investigated. The bedding and the addition of ultra-fine SiC effectively inhibited grain growth of $Si_3N_4$ matrix grain. The microstructures of the specimens sintered with bedding powder consisted of fine-grains as compared with the specimens sintered without bedding powder. In addition, the grain size and the difference of grain size between the specimens sintered with bedding and without bedding was reduced with increasing SiC content. Some ultra-fine SiC particles were trapped in the $Si_3N_4$ grains growed. The number of SiC particles trapped in the $Si_3N_4$ grains increased with increasing the grain growth. When ultra-fine SiC particles were added in the $Si_3N_4$ ceramics, the strength was improved but the toughness was decreased, which was considered to be resulted from the decrease of the grain size.

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References

  1. Tailoring of Mechanical Properties of Si₃N₄ Ceramics Jurgen G. Heinrich;Hartmut Kruner;M. J. Hoffmann(ed.);G. Petzow(ed.)
  2. J. Am. Ceram. Soc. v.77 Giuseppe Pezzotti;Mototsugu Sakai https://doi.org/10.1111/j.1151-2916.1994.tb04545.x
  3. Rev. Phys. Appl. v.23 M. Backhaus-Ricoult;J. Castaing;J. L. Routbort https://doi.org/10.1051/rphysap:01988002303023900
  4. J. Mater. Sci. v.26 B. J. Hockey;S. M. Weiderhorn;W. Liu;G. Baldoni;S. T. Buljan https://doi.org/10.1007/BF01184994
  5. J. Am. Ceram. Soc. v.76 C. Y. Chu;J. P. Singh;J. L. Routbort https://doi.org/10.1111/j.1151-2916.1993.tb03764.x
  6. Proceedings of the 11th Riso International Symposium on Metallurgy and Materials Science Ceramic-Processing, Microstructure, and Properties N. Claussen;J. J. Bentzen(ed.);J. B. Bilde-Sorensen(ed.);N. Christiansen(ed.);A. Horsewell(ed.);B. Ralph(ed.)
  7. J. Am. Ceram. Soc. v.81 M. Herrmann;C. Schuber;A. Rendtel;H. Hueber https://doi.org/10.1111/j.1151-2916.1998.tb02456.x
  8. J. Am. Ceram. Soc. v.63 C. Greskovich;J. A. Palm https://doi.org/10.1111/j.1151-2916.1980.tb10774.x
  9. J. Ceram. Soc. Jpn. v.100 G. Sasaki;H. Nakase;K. Suganuma;T. Fujita;K. Niihara https://doi.org/10.2109/jcersj.100.536
  10. J. Jpn. Soc. Powder Powder Metall. v.41 T. Hirano;A. Nakahira;K. Niihara https://doi.org/10.2497/jjspm.41.1243
  11. J. Jpn. Soc. Powder Powder Metall. v.36 K. Niihara;T. Hirano;A. Nakahira;K. Suganuma;K. Izaki;T. Kawakami https://doi.org/10.2497/jjspm.36.243
  12. J. Mater. Sci. Lett. v.10 K. Niihara;K. Izaki;T. kawakami https://doi.org/10.1016/0167-577X(90)90042-K
  13. J. Jpn. Soc. Powder Powder Metall. v.37 K. Niihara;K. Izaki;A. Nakahira https://doi.org/10.2497/jjspm.37.352
  14. J. Eur. Ceram. Soc. v.18 H. J. Park;H. E. Kim;K. Niihara https://doi.org/10.1016/S0955-2219(97)00180-5
  15. Proceedings of the 1st International Symposium on Sci. of Eng. Ceramics K. Izaki;A. Nakahira;K. Niihara
  16. Materials Letters v.52 H. R. Lee;C. J. Lee;Deug J. Kim https://doi.org/10.1016/S0167-577X(01)00421-9