Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-19T05:06:58.517Z Has data issue: false hasContentIssue false
  • English
  • Français

Sinterability of SiC powder coated uniformly with Al ions

Published online by Cambridge University Press:  31 January 2011

Soichiro Sameshima ,
Keisuke Miyano  and
Yoshihiro Hirata
Soichiro Sameshima
Affiliation:
Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan
Keisuke Miyano
Affiliation:
Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan
Yoshihiro Hirata
Affiliation:
Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan
Get access

Abstract

SiC particles coated uniformly with Al ions (0.25 mass% Al2O3) in an aluminum nitrate solution were consolidated by filtration through a gypsum mold. Hot-pressing in vacuum gave dense SiC (above 99% relative density) in the temperature range of 1900–1950 °C under a pressure of 39 MPa. The microstructures of dense SiC consisted of 2–5 μm grains of low aspect ratios (below 2). The fracture toughness and flexural strength of SiC increased gradually as the hot-pressing temperature became higher and were 4.3 Mpa m0.5 and 350 MPa, respectively, with hot-pressing at 1950 °C. Crack propagation in SiC shifted from intergrain to intragrain with increasing hot-pressing temperature.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 4 , April 1998 , pp. 816 - 820
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Wang, L. M. and Wei, W. C., J. Ceram. Soc. Jpn. 103, 434–443 (1995).CrossRefGoogle Scholar
2.Lidén, E., Carlström, E., Eklung, L., Nyberg, B., and Carlsson, R., J. Am. Ceram. Soc. 78, 1761–1768 (1995).CrossRefGoogle Scholar
3.Hirata, Y., Otsubo, Y., and Arimura, Y., J. Ceram. Soc. Jpn. 103, 782–785 (1995).CrossRefGoogle Scholar
4.Sameshima, S., Arimura, Y., and Hirata, Y., J. Ceram. Soc. Jpn. 104, 268–272 (1996).CrossRefGoogle Scholar
5.Pugh, R. J., in Surface and Colloidal Chemistry in Advanced Ceramics Processing, edited by Pugh, R. J. and Bergström, L. (Marcel Dekker, Inc., New York, 1994), pp. 141–148.Google Scholar
6.Hirata, Y., Miyano, K., Sameshima, S., and Kamino, Y., Proc. 2nd Int. Meeting of Pacific Rim Ceramic Societies, Australia (1997).Google Scholar
7.Hirata, Y., Miyano, K., Sameshima, S., and Kamino, Y., Colloids and Surfaces (1997).Google Scholar
8.Hirata, Y. and Hidaka, K., Proc. Int. Symp. on Environmental Issue of Ceramics, edited by Yanagida, H. and Yoshimura, M. (Ceram. Soc. Jpn., 1995), pp. 264–272.Google Scholar
9.Hase, T., Suzuki, H., and Iseki, T., J. Ceram. Soc. Jpn. 87, 576–582 (1979).Google Scholar
10.Hirata, Y., Hidaka, K., Matsumura, H., Fukushige, Y., and Sameshima, S., J. Mater. Res. 12, 3146 (1997).CrossRefGoogle Scholar
11.Alliegro, R. A., Coffin, L. B., and Tinkle-pauph, J. R., J. Am. Ceram. Soc. 39, 386–389 (1956).CrossRefGoogle Scholar
12.Lange, F. F., J. Mater. Sci. 10, 314–320 (1975).CrossRefGoogle Scholar
13.Shinohara, N., Suzuki, K., and Kanno, T., Research Laboratory Reports, Asahi Glass Co. Ltd. 41, 25–40 (1991).Google Scholar
14.Shinozaki, S. S., MRS Bull. 20, 42–45 (1995).CrossRefGoogle Scholar
15.Kingary, W. D., Bowen, H. K., and Uhlman, D. R., Introduction to Ceramics (John Wiley & Sons, Inc., New York, 1976), pp. 212–214.Google Scholar
16.Shinozaki, S. S., Hangas, J., Carduner, K. R., Rokosz, M. J., Suzuki, K., and Shinohara, N., J. Mater. Res. 8, 1635 (1993).CrossRefGoogle Scholar
17.Hirata, Y., Suekawa, Y., and Shimada, K., J. Ceram. Soc. Jpn. 92, 126–134 (1984).Google Scholar