Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-13T02:14:58.963Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of precursors on the combustion synthesis of TiC-Al2O3 composite

Published online by Cambridge University Press:  03 March 2011

Yoon Choi  and
Shi-Woo Rhee
Yoon Choi
Affiliation:
Laboratory for Advanced Materials Processing, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790–600, Korea
Shi-Woo Rhee
Affiliation:
Laboratory for Advanced Materials Processing, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790–600, Korea
Get access

Abstract

In the combustion synthesis of TiC-Al2O3 composites from TiO2, Al, and C, different types of precursors, i.e., anatase and rutile TiO2, and graphite and carbon black were used. The measurements of combustion wave velocity showed that the reactivity was higher with graphite as a carbon source and anatase as a TiO2 source. This was also confirmed by analyzing the degree of conversion of reactants to products. For the precursors investigated, the wave propagation of the 3TiO2-4Al-3C system diluted by Al2O3 showed that the limit of wave propagation was more dependent on carbon source than on TiO2. The wave front of all the samples proceeded in unstable combustion mode. Temperature profiles in the reaction zone suggested that the heat-affected zone was broader in the case of graphite carbon source than carbon black. The microstructures and chemical composition of the products were also studied.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 7 , July 1994 , pp. 1761 - 1766
Copyright
Copyright © Materials Research Society 1994

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

1King, A.G., Am. Ceram. Soc. Bull. 43, 395 (1965).Google Scholar
2Bordui, D., Am. Ceram. Soc. Bull. 67, 998 (1988).Google Scholar
3Burden, S.J., Am. Ceram. Soc. Bull. 67, 1003 (1988).Google Scholar
4Frankhouser, W. L., Brendley, K.W., Kieszek, M. C., and Sullivan, S.T., Gasless Combustion Synthesis of Refractory Compounds (Noyes Publications, Park Ridge, NJ, 1985), p. 3.Google Scholar
5Cutler, R. A., Virkar, A. V., and Holt, J. B., Ceram. Eng. Sci. Proc. 6, 715 (1985).Google Scholar
6Adachi, S., Wada, T., Mihara, T., Miyamoto, Y., and Koizumi, M., J. Am. Ceram. Soc. 73, 1451 (1990).Google Scholar
7Rabin, B. H., Korth, G. E., and Williamson, R. L., J. Am. Ceram. Soc. 73, 2156 (1990).Google Scholar
8Cutler, R. A., Rigtrup, K. M., and Virkar, A. V., J. Am. Ceram. Soc. 75, 36 (1992).Google Scholar
9Barin, I., Sauert, F., Schultze-Rhonhof, E., and Sheng, W. S., Thermochemical Data of Pure Substances (VCH, New York, 1989), pp. 48, 1528, 1546–1547.Google Scholar
10Choi, Y. and Rhee, S-W., J. Mater. Res. 8, 3202 (1993).Google Scholar
11Holt, J.B. and Munir, J.A., J. Mater. Sci. 21, 251 (1986).Google Scholar
12Hardt, A. P. and Holsinger, R.W., Comb. Flame 21, 91 (1973).Google Scholar
13Choi, Y. and Rhee, S., unpublished research.Google Scholar