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Characterization of High Temperature Strength of Si3N4 Composite Ceramics According to the Amount of SiO2 Nano Colloidal Added

SiO2 나노 콜로이달 첨가량에 따른 Si3N4의 고온강도 특성

  • Published : 2009.11.01

Abstract

This study analyzed the characterization of high temperature strength of $Si_3N_4$ composite ceramics additive based on variations in the amount of nano colloidal $SiO_2$ added. Semi-elliptical cracks about 100 ${\mu}m$ length were obtained from a Vickers indenter using a load of 24.5 N. The results showed that the heat-treated smooth specimens with $SiO_2$ nano colloidal coating exhibited the highest bending strength at 0.0 wt% $SiO_2$ nano colloidal added, which is amounted to a 187 % increase over that of smooth specimen. Limiting temperature for bending strength of crack-healed zone for bending strength was about 1273 K. However, the bending strength of SSTS-3 and SSTS-4 was considerably increased while that of SSTS-1 and SSTS-2 was decreased at a temperature of 1,573K.

Keywords

$Si_3N_4$ Composite Ceramics;Bending Strength;Crack Healing;High Temperature Strength;$SiO_2$ Nano Colloidal

References

  1. Choi, S. R. and Tikara, V., 1992, 'Crack-Healing Behavior Of Hot-Pressed Silicon Nitride Due to Oxidation,' Scripta. Metall. Mater., Vol. 26, pp 1263-1268 https://doi.org/10.1016/0956-716X(92)90574-X
  2. Ogasawara, T., Hori, T. and Okada, A., 1994, 'Thereshold Stress Intensity for Oxidative Crack Healing in Sintered Silicon Nitride,' J. Mat. Sci. Lett.,Vol. 13, pp 404-406 https://doi.org/10.1007/BF00278010
  3. Zhang, Y. Z., Edwards, L. and Plumbridge, W.J., 1998, 'Crack Healing in a Silicon Nitride Ceramics,' J. Am. Ceram. Soc., Vol. 81, pp 1861-1868 https://doi.org/10.1111/j.1151-2916.1998.tb02558.x
  4. Ando, K., Ikeda, T., Sato, S., Yao, F. and Kobayashi, Y., 1998, 'A Preliminary Study on Crack Healing Behaviour of Si3N4/SiC Composite Ceramics,' Fatigue Fract. Engng. Mater. Struct, Vol. 21, pp 119-122 https://doi.org/10.1046/j.1460-2695.1998.00052.x
  5. Ando, K., Chu, M. C., Sato, S., Yao, F. and Kobayashi, Y., 1998, 'The Study on Crack Healing Behavior of Silicon Nitride Ceramics,' Jpn. Soc. Mech. Engng., Vol. 64, pp 1936-1942 (in Japanese) https://doi.org/10.1299/kikaia.64.1936
  6. Ando, K., Shirai, Y., Nakatani, M., Kobayashi, Y. and Sato, S., 2002, '(Crack-healing + Proof test): a New Methodology to Guarantee the Structural Integrity of a Ceramics Component,' J. Eur. Ceram. Soc., Vol. 22, pp 121-128 https://doi.org/10.1016/S0955-2219(01)00236-9
  7. Nam, K. W., Kim, H. S., Son, C. S., Kim, S. K. and Ahn, S. H., 2007, 'Cracked-Healing and Elevated Temperature Bending Strength of Al2O3 Composite Ceramics by an Amount of Y2O3,' Transactions of the KSME(A), Vol. 31, pp 1108-1114 https://doi.org/10.3795/KSME-A.2007.31.11.1108
  8. Nam, K. W., Kim, M. K., Kim, H. S., Kim, J. W. and Ahn, S. H., 2006, 'Bending Strength of Si3N4 Monolithic and Si3N4/SiC Composite Ceramics and Elastic Wave Characteristics by Wavelet Analysis,' International Journal of Modern Physics B, Vol. 20, No. 25-27, pp. 4279-4284 https://doi.org/10.1142/S0217979206041227
  9. Nam, K. W., Kim, M. K., Park, S. W., Ahn, S. H. and Kim, J. S., 2007, 'Crack Healing Behavior and Bending Strength of Si3N4/SiC Composite Ceramics by SiO2 Colloidal,' Materials Science and Engineering: A, Vol. 471, pp. 102-105 https://doi.org/10.1016/j.msea.2007.03.005
  10. Kim, M. K., Kang, S. B., Ahn, S. H. and Nam, K. W.. 2007, 'Strength and Surface Morphology of Si3N4Composite Ceramics Coated with SiO2Gel,' Solid State Phenomena, Vols. 124-126, pp. 719-722 https://doi.org/10.4028/www.scientific.net/SSP.124-126.719
  11. Kim, M. K., Park, S. W., Son, C. S., Ahn, S. H. and Nam, K. W., 2006, 'Crack Healing and Bending Strength of Si3N4/SiC Composite Ceramics by Additive Powder TiO2,' Proceeding of The KSME 2006 Fall Annual Meeting, pp. 149-152
  12. Park, S. W., Kim, M. K., Ahn, S. H. and Nam, K. W., 2006, 'Bending Strength of Crack Healed Si3N4/SiC Composite Ceramics by SiO2Colloidal,' 2006 Annual Conference & International Workshops of the 20th Anniversary of the Korean Society of Ocean Engineers, pp. 166-168
  13. Nam, K. W., Park, S. W. and Ahn, S. H., 2008, 'Crack-healing Behavior and Strength Properties of SiC Ceramics According to Additives SiO2,' Proceeding of Korea Ocean Science Technique Council 2007 Joint Meeting, pp. 2430
  14. Nam, K. W., Park, S. H. and Kim, J. S., 2007, 'Cracked-healing and the Bending Strength of Si3N4 Composite Ceramics with SiO2 Additions,' Journal of Ceramic Processing Research. Vol. 10, No. 1. (in printing)
  15. Lee, S. K., Ishida, W., Lee, S. Y., Nam, K. W. and Ando, K.. 2005, 'Crack-Healing Behavior and Resultant Strength Properties of Silicon Carbide Ceramic,' J. Eur. Ceram. Soc., Vol. 25, pp. 569-576 https://doi.org/10.1016/j.jeurceramsoc.2004.01.021
  16. Kim, H. S., Kim, M. K., Kim, J. W., Ahn, S. H. and Nam, K. W., 2007, 'Strength of Crack Healed-Specimen and Elastic Wave Characteristics of Al2O3/SiC Composite Ceramics,' Transactions of the KSME(A), Vol. 31, No. 4, pp. 425-431 https://doi.org/10.3795/KSME-A.2007.31.4.425
  17. Ando, K., Ikeda, T., Sato, S., Yao, F. and Kobayashi, Y., 1998, 'A Preliminary Study on Crack Healing Behaviour of Si3N4/SiC Composite Ceramics,' Fatigue Fract. Eng. Mater. Struct., Vol. 21, pp. 119-22 https://doi.org/10.1046/j.1460-2695.1998.00052.x

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