한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제39권3호
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  • Pages.217-221
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  • 2002
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Effect of Si/α-Si3N4 Ratio on the Shape of Silicon Nitride Particles Produced by SHS Method

  • 발행 : 2002.01.01
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초록

Si and ${\alpha}-Si_3N_4$ powder mixtures added with 3 wt% $Y_2O_3$ were reacted under 5 MPa nitrogen pressure. The reaction products contained ${\alpha}-Si_3N_4$ particles with elongated shapes. Length and width of the elongated grains were the maximum when the starting powder mixture of 50 wt% Si - 47 wt% ${\alpha}-Si_3N_4$ and 3 wt% $Y_2O_3$ was used. Aspect ratio of the elongated grains were between 4.4 and 5. When the starting powder mixture contained 70 wt% Si, large particles with irregular shapes appeared. Meanwhile, the reaction did not proceed when the starting powder mixture contained 30 wt% Si and less. The SHS product was easy to crush and the elongated particles obtained from the starting powder mixtures of 40 wt% Si - 57 wt% ${\alpha}-Si_3N_4$ - 3 wt% $Y_2O_3$ and 50 wt% Si - 47 wt% ${\alpha}-Si_3N_4$ - 3 wt% $Y_2O_3$ were good candidates for the seeds.

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참고문헌

  1. F. L. Riley, Silicon nitride and related materials, J. Am. Ceram. Soc., 83 [2] 245-65 (2000) https://doi.org/10.1111/j.1151-2916.2000.tb01182.x
  2. P. F. Becher, Microstructural Design of Toughened Ceramics, J. Am. Ceram. Soc., 74 [2] 255-69 (1991) https://doi.org/10.1111/j.1151-2916.1991.tb06872.x
  3. K. Hirao, M. Ohashi, M. E. Brito and S. Kanzaki, Processing Strategy for Producing Highly Anisotropic Silicon Nitride, J. Am. Ceram. Soc., 78 [6] 1687-90 (1995) https://doi.org/10.1111/j.1151-2916.1995.tb08871.x
  4. T. Ohji, K. Hirao and S. Kanzaki, Fracture Resistance Behavior of Highly Anisotripic Silicon Nitride, J. Am. Ceram Soc., 78 [11] 3125-28 (1995) https://doi.org/10.1111/j.1151-2916.1995.tb09095.x
  5. D-S. Park and M-J. Choi, T-W. Roh, H-D. Kim and B-D. Han, Orientation-dependent Properties of Silicon Nitride with Aligned Reinforcing Grains, J. Mat. Res., 15 [1] 130-35 (2000) https://doi.org/10.1557/JMR.2000.0022
  6. H. Imamura, K. Hirao, M. E. Brito, M. Toriyama and S. Kanzaki, Further Improvement in Mechanical Properties of Highly Anisotropic Silicon Nitride Ceramics, J. Am. Ceram. Soc., 83 [3] 495-500 (2000) https://doi.org/10.1111/j.1151-2916.2000.tb01223.x
  7. D. Muscat, M. D. Pugh and R. A. L. Drew, Pressureless Sintering of An Extruded Si$_3$N$_4$ Whisker-Reinforced Com-posite, pp. 137-43 in Ceramic Transactions, Vol. 19, Advanced Composite Materials, Ed. by M.D.Sacks, Ameh-can Ceramic Society, Westerville, OH, 1991
  8. H. Teshima, K. Hirao, M. Toriyama and S. Kanzaki, Fabri-cation and Mechanical Properties of Silicon Nitride Ceram-ics with Unidirectionally Oriented Rodlike Grains, J. Ceram. Soc. Jpn., 107 [12] 1216-20 (1999) https://doi.org/10.2109/jcersj.107.1216
  9. B-C. Bae, D-S. Park, W-J. Kim, Y-W. Kim, B-D. Han, H-D. Kim and C. Park, Texture in Silicon Nitride Seeded with Silicon Nitride Whiskers of Different Sizes, in review, J. Am. Ceram. Soc
  10. T. Hirata, K. Akiyama and T. Morimoto, Synthesis of P-Si$_3$N$_4$ Particles from a-Si$_3$N., Particles, J. Euro. Ceram. Soc., 20 1191-95 (2000) https://doi.org/10.1016/S0955-2219(99)00266-6
  11. P. D. Ramesh, R. Oberaker and M. J. Hoffmann, Prepara-tion of B-Silicon Nitride Seeds for Self-reinforced Silicon Nitride Ceramics, J. Am. Ceram. Soc., 82 [6] 1608-10 (1999) https://doi.org/10.1111/j.1151-2916.1999.tb01969.x
  12. A. G. Merzhanov, Self-propagating High Temperature Syn-thesis: Twenty Years of Search and Findings, pp. 1-53 in Combustion and Plasma Synthesis of High-temperature Materials, Ed. by Z. A. Munir and J. B. Holt, VCH Pub-lisher, New York. 1990
  13. C. Dianying, Z. Baolin, Z. Hanrui, L. Wenlan and X. Suying, Synthesis and Growth Mechanism of $\beta-Si_3N_4$ Whiskers by SHS Method, in review, Mat. Res. Bull
  14. M. W. Chase, Jr., C. A. Davis, J. R. Downey, Jr., D. J. Fruhp, R. A. McDonald and A. N. Syverud, JANAF Tables 3rd Edi-tion., J. Phys. Chem. Ref. Data, 14 Suppliment No. 1(1985)
  15. Z. A. Munir, Synthesis of High Temperature Materials by Self-propagating Combustion Methods, Ceram. Butt. 67 342-49 (1988)
  16. J. B. Holt, Synthesis of Nonoxide Ceramic Powders by Solid Combustion Processes, pp. 301-10 in Advances in Ceramics, Vol. 21: Ceramic Powder Science, The American Ceramic Society 1987
  17. C. P. Gazzara and D. R. Messier, Determination of Phase Content of Si$_3N_4$ by X-ray Diffraction Analysis, Ceram. Bull., 56 [9] 777-80 (1977)
  18. D. P. Elias and M. W. Lindley, Reaction Sintered Silicon Nitride, J. Mat. Sci., 11 1278-86 (1976) https://doi.org/10.1007/BF00545147
  19. M. Kramer. M. J. Hoffmann and G. Petzow, Grain growth kinetics of $Si_3N_4$., during a/b-transformation. Acta Metatt. Mat., 41 2939-47 (1993) https://doi.org/10.1016/0956-7151(93)90108-5