한국재료학회지 (Korean Journal of Materials Research)

  • 제20권4호
  • /
  • Pages.217-222
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  • 2010
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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Effect of TaB2 Addition on the Oxidation Behaviors of ZrB2-SiC Based Ultra-High Temperature Ceramics

  • Lee, Seung-Jun (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Do-Kyung (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 2010.04.27
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초록

Zirconium diboride (ZrB2) and mixed diboride of (Zr0.7Ta0.3)B2 containing 30 vol.% silicon carbide (SiC) composites were prepared by hot-pressing at $1800^{\circ}C$. XRD analysis identified the high crystalline metal diboride-SiC composites at $1800^{\circ}C$. The TaB2 addition to ZrB2-SiC showed a slight peak shift to a higher angle of 2-theta of ZrB2, which confirmed the presence of a homogeneous solid solution. Elastic modulus, hardness and fracture toughness were slightly increased by addition of TaB2. A volatility diagram was calculated to understand the oxidation behavior. Oxidation behavior was investigated at $1500^{\circ}C$ under ambient and low oxygen partial pressure (pO2~10-8 Pa). In an ambient environment, the TaB2 addition to the ZrB2-SiC improved the oxidation resistance over entire range of evaluated temperatures by formation of a less porous oxide layer beneath the surface SiO2. Exposure of metal boride-SiC at low pO2 resulted in active oxidation of SiC due to the high vapor pressure of SiO (g), and, as a result, it produced a porous surface layer. The depth variations of the oxidized layer were measured by SEM. In the ZrB2-SiC composite, the thickness of the reaction layer linearly increased as a function of time and showed active oxidation kinetics. The TaB2 addition to the ZrB2-SiC composite showed improved oxidation resistance with slight deviation from the linearity in depth variation.

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참고문헌

  1. Y. B. Lee, J. S. Kim, S. B. Kim, H. C. Park and K. D. Oh,Kor. J. Mater. Res., 9(1), 8 (1999) (in Korean).
  2. W. G. Fahrenholtz and G. E. Hilmas, J. Am. Ceram. Soc.,90(5), 1347 (2007). https://doi.org/10.1111/j.1551-2916.2007.01583.x
  3. S. J. Lee and D. K. Kim, Sur. Rev. Lett., 17(3), 1 (2010). https://doi.org/10.1142/S0218625X10013540
  4. N. P Bansal, Handbook of ceramics composite, p.197,Springer, US (1997).
  5. J. Han, P. Hu, X. Zhang and S. Meng, Scripta. Mater.,57, 825 (2007). https://doi.org/10.1016/j.scriptamat.2007.07.009
  6. W. W. Wu, G. J. Zhang, Y. M. Kan and P. L. Wang, J. Am. Ceram. Soc., 91(8), 2501 (2008). https://doi.org/10.1111/j.1551-2916.2008.02507.x
  7. A. Rezaie, W. G. Fahrenholtz and G. E. Hilmas, J. Eur. Ceram. Soc., 27, 2495 (2007). https://doi.org/10.1016/j.jeurceramsoc.2006.10.012
  8. S. J. Lee and D. K. Kim, Key Eng. Mater., 403, 253(2009). https://doi.org/10.4028/www.scientific.net/KEM.403.253
  9. S. N. Karlsdottir and J. W. Halloran, J. Am. Ceram. Soc.,91(1), 272 (2008).
  10. E. Opila, S. Levine and J. Lorincz, J. Mater. Sci., 39,5969 (2004). https://doi.org/10.1023/B:JMSC.0000041693.32531.d1
  11. M. M. Opeka, I. G. Talmy and J. A. Zaykoski, J. Mater. Sci., 39, 5887 (2004). https://doi.org/10.1023/B:JMSC.0000041686.21788.77
  12. D. Sciti, L. Silvestroni, G. Celotti and S. Guicciardi, J. Am. Ceram. Soc., 91(10), 3285 (2008). https://doi.org/10.1111/j.1551-2916.2008.02593.x
  13. A. Rezaie, W. G. Fahrenholtz and G. E. Hilmas, J. Am. Ceram. Soc., 89(10), 3240 (2006). https://doi.org/10.1111/j.1551-2916.2006.01229.x
  14. A. Bongiorno, C. J. Först, R. K. Kalia, J. Li, J. Marschall,A. Nakano, M. M. Opeka, I. G. Talmy, P. Vashishta andS. Yip, Mater. Res. Soc. Bull., 31, 410 (2006). https://doi.org/10.1557/mrs2006.103
  15. S. S. Hwang, A. L. Vasiliev and N. P. Padture, Mater. Sci. Eng. A, 464, 216 (2007). https://doi.org/10.1016/j.msea.2007.03.002
  16. M. Balat, G. Flamant, G. Male and G. Pichelin, J. Mater. Sci. 27, 697 (1992). https://doi.org/10.1007/BF02403882

피인용 문헌

  1. Promising ultra-high-temperature ceramic materials for aerospace applications vol.58, pp.14, 2013, https://doi.org/10.1134/S0036023613140039