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Phase Transition and Thermal Expansion Behavior of Zirconia Setter Fabricated from Fused CaO Stabilized Zirconia

  • 투고 : 2019.02.05
  • 심사 : 2019.03.04
  • 발행 : 2019.03.31

초록

To improve resistance in thermal shock of zirconia setter which is frequently and repeatedly exposed to high temperature, high degree of porosity and control of thermal expansion are needed for which the fused CSZ (CaO stabilized zirconia) is used to produce the zirconia setter. In the present study, the effects of sintering temperature, cool down condition, addition of CaO stabilizer, and addition of other additives on phase transition and thermal expansion behavior of the fabrication process of zirconia setter, were examined. The zirconia setter, fabricated with fused CSZ at 1550℃, exhibited 20.4 MPa of flexural strength, 6.8% of absorbance, and 27.9% of apparent porosity. The rapid change in thermal expansion of zirconia setter is observed at temperature around 800℃, and it was reduced by low firing temperature, slowed cooled down, and addition of CaO.

키워드

참고문헌

  1. P. Duwez, F. Odell, and F. H. Brown, "Stabilization of Zirconia with Calcia and Magnesia," J. Am. Ceram. Soc., 359 [5] 107-13 (1952).
  2. V. S. Stubican and S. P. Ray, "Phase Equilibria and Ordering in the System $ZrO_2$-CaO," J. Am. Ceram. Soc., 60 [11-12] 534-37 (1977). https://doi.org/10.1111/j.1151-2916.1977.tb14100.x
  3. F. F. Lange, "Transformation Toughening, Part 1," J. Mater. Sci., 17, 225-34 (1982). https://doi.org/10.1007/BF00809057
  4. R. C. Garvie and P. S. Nicholson, "Structure and Thermomechanical Properties of Partially Stabilized Zirconia in the CaO-$ZrO_2$ System," J. Am. Ceram. Soc., 55 [3] 152-57 (1972). https://doi.org/10.1111/j.1151-2916.1972.tb11241.x
  5. J. Y. Kim, K. H. Hawng, and H. Kim, "Effect of Metastable Tetragonal $ZrO_2$ Phase on the Mechanical Properties in $Al_2O$-$ZrO_2$ System," J. Korean Ceram. Soc., 21 [2] 149-55 (1984).
  6. S. B. Jeon and S. I. Pyun, "Preparation and Characterization of Stabilized $ZrO_2$ by Wet Chemical Methods," J. Korean Ceram. Soc., 16 [3] 155-63 (1979).
  7. J. J. Kim, "Mechanical Properties and Microstructural Evolution Related to Phase Transformation in Partially Stabilized Zirconia Ceramics," Sci. Technol. Ceram. Mater., 3 [3] 217-23 (1988).
  8. A. H. Heuer and M. Ruhle, "Phase Transformation in $ZrO_2$ Containing Ceramics: I the Instability of C-$ZrO_2$ and the Resulting Diffusion-Controlled Reaction," pp. 1-13 in Advances in Ceramics, Vol. 12, Science and Technology of Zirconia II, Ed. by A. H. Hever, N. Claussen and M. Ruhle, Am. Ceram. Soc. Press, Columbus, 1984.
  9. D. L. Porter and A. H. Heuer, "Microstructural Development in MgO-Partially Stabilized Zirconia (Mg-PSZ)," J. Am, Ceram. Soc., 62 [5-6] 298-308 (1979). https://doi.org/10.1111/j.1151-2916.1979.tb09484.x
  10. K. H. Hwang and H. Kim, "The Study on the Improvement of the Strength and the Thermal Shock Resistance of $Al_2O_3$-$ZrO_2$ Composites," J. Korean Ceram. Soc., 25 [3] 225-30 (1988).
  11. R. C. Garvie, R. H. Hannink, and R. T. Pascoe, "Ceramic Steel?," Nature, 258 [5537] 703-704 (1975). https://doi.org/10.1038/258703a0
  12. D. L. Porter, A. G. Evans, and A. H. Heuer, "Transformation- Toughening in Partially Stabilized Zirconia (PSZ)," Acta Metall., 27 [10] 1649-1654 (1979). https://doi.org/10.1016/0001-6160(79)90046-4
  13. R. C. Garvie and P. S. Nicholson, "Phase Analysis in Zirconia Systems," J. Am. Ceram. Soc., 55 [6] 303-305 (1972). https://doi.org/10.1111/j.1151-2916.1972.tb11290.x
  14. D. H. Lee, T. W. Kim, K. S. Lee, and C. Kim, "Thermal Shock Resistance of Bilayered YSZ Thermal Barrier Coating," J. Korean Ceram. Soc., 55 [5] 452-60 (2018). https://doi.org/10.4191/kcers.2018.55.5.04
  15. B. C. Weber, H. J. Garrett, F. A. Mauer, and M. A. Schwartz, "Observations on the Stabilization of Zirconia," J. Am. Ceram. Soc., 39 [6] 197-206 (1956). https://doi.org/10.1111/j.1151-2916.1956.tb15645.x
  16. T. Yamauchi and S. Somiya, "A Study on the Stabilization of Zirconia," J. Jpn. Ceram. Soc., 64 [722] 57-66 (1956).
  17. S. I. Pyun, "About Stabilized Zirconia," J. Korean Ceram. Soc., 13 [4] 44-9 (1976).
  18. K. C. Park and Y. S. Choi, "A Study on Microstructure and Phase Transformation of Sintered Body in CaO-$ZrO_2$ System," J. Korean Ceram. Soc., 20 [3] 217-26 (1983).