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Characteristics of Cordierite-ZrO2 Composites Fabricated by The Multiphasic Sol-Gel Route

Published online by Cambridge University Press:  25 February 2011

Hyun M. Jang  and
Byung C. Lim
Hyun M. Jang
Affiliation:
Department of Materials Science and Engineering, and Advanced Ceramics Processing Science Laboratory, Pohang Institute of Science and Technology (POSTECH), Pohang 790-600, Republic of Korea
Byung C. Lim
Affiliation:
Department of Materials Science and Engineering, and Advanced Ceramics Processing Science Laboratory, Pohang Institute of Science and Technology (POSTECH), Pohang 790-600, Republic of Korea
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Abstract

Based on the electrokinetic properties of aqueous silica, boehmite, and ZrO2 dispersions, cordierite-ZrO2 composites were fabricated by the multiphasic sol-gel (or nanometer-scale sol mixing) route. The average particle sizes of boehmite and ZrO2 used in this study are 70 nm and 40 nm, respectively. The fabricated composites were characterized by a dense and homogeneous microstructure and by a uniform spatial distribution of submicron-sized tetragonal ZrO2 particles (200 nm) throughout the matrix. The microstructure of the matrix was represented by small-sized grains (< 400 nm) with a highly uniform grain-size distribution. The enhanced fracture toughness with increasing ZrO2 content was partly attributed to the martensitic t → m transformation. The formation of detrimental zircon (ZrSiO4) was avoided by suitably adjusting the heating schedule during sintering.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992 , 281
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1. Mussler, B. H. and Shafer, M. W., Am. Ceram. Soc. Bull. 64, 1459 (1985).Google Scholar
2. McCoy, M. A. and Heuer, A. H., J. Am. Ceram. Soc. 71, 673 (1988).Google Scholar
3. McCoy, M. A., Lee, W. E., and Heuer, A. H., J. Am. Ceram. Soc. 69, 292 (1986).Google Scholar
4. Clarke, D. R. and Schwartz, B., J. Mater. Res. 2, 801 (1987).Google Scholar
5. Travitzky, N. A. and Claussen, N., Adv. Ceram. 2, Proc. Lect Meet. Adv. Ceram. 2, 121 (1988).Google Scholar
6. Nieszery, K., Weisskopf, K. -L., Petzow, G., and Pannhorst, W., Sci. Sinter. 20, 149 (1988).Google Scholar
7. Hoffman, D., Roy, R., and Komarneni, S., J. Am. Ceram. Soc. 67, 468 (1984).Google Scholar
8. Kazakos, A. M., Komarneni, S., and Roy, R., J. Mater. Res. 5, 1095 (1990).Google Scholar
9. Wiersema, P. H., Loeb, A. L., and Overbeek, J. Th. G., J. Colloid Interf. Sci. 22, 78 (1966).Google Scholar
10. Lawn, B. R. and Fuller, E. R., J. Mater. Sci. 10, 2016 (1975).Google Scholar
11. Jang, H. M. and Moon, J. H., J. Mater. Res. 5,615 (1990).Google Scholar
12. Hirata, Y., Haraguchi, I., and Ishihara, Y., J. Ceram. Soc., Japan (Yogyo-Kyokai-Shi), 98, 951 (1990).Google Scholar
13. Hunter, R. J., Foundation of Colloid Science, Vol. 1, (Clarendon Press, Oxford, 1987), p.222.Google Scholar
14. Garvie, R. C. and Nicholson, P.S., J. Am. Ceram. Soc. 55, 303 (1972).Google Scholar
15. Claussen, N. and ROhle, M., in Advances in Ceramics. Vol. 3. Science and Technology of Zirconia, edited by Heuer, A. H., and Hobbs, L. W. (Am. Ceram. Soc., Ohio, 1981), p.137.Google Scholar
16. Kosmac, T., Wagner, R., and Claussen, N., J. Am. Ceram. Soc. 64, C–72 (1981).Google Scholar