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The mechanism and kinetics of the niobium-carbon reaction under self-propagating high-temperature synthesis-like conditions

Published online by Cambridge University Press:  03 March 2011

Cheng He  and
Gregory C. Stangle
Cheng He
Affiliation:
School of Ceramic Engineering and Sciences, New York State College of Ceramics at Alfred University, Alfred, New York 14802
Gregory C. Stangle
Affiliation:
School of Ceramic Engineering and Sciences, New York State College of Ceramics at Alfred University, Alfred, New York 14802
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Abstract

The mechanism and kinetics of the chemical reaction between Nb(s) and C(s) under self-propagating high-temperature synthesis (SHS)-like (or combustion synthesis-like) conditions have been studied. Experiments were designed and conducted in order to produce a transport-resistance-free reaction between Nb and C under time-temperature conditions that are characteristic of the combustion synthesis process. To do so, a reaction couple, consisting of carbon and either a thin niobium foil or a fine niobium wire, was used. The effects of the temperature history and the formation of a liquid phase on the reaction were studied. In addition, theoretical experiments of the reaction were also conducted. The results showed that at high temperatures, layered niobium carbide phases formed in a direction that was parallel to the original carbon-niobium interface. As might be expected, local melting played a very significant role in the reactions. The mechanism and kinetics of these reactions provide a fundamental understanding of the manner and rate by which a powder-based Nb/C SHS process takes place, and, by extension, to a large, general class of solid-solid material synthesis processes that are based on the SHS (or combustion synthesis) process.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 11 , November 1995 , pp. 2829 - 2841
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1Low, I.M., J. Mater. Sci. Lett. 11, 715–718 (1992).CrossRefGoogle Scholar
2Rabin, R. H., Korth, G. E., and Williamson, R. L., J. Am. Ceram. Soc. 73, 2156–2157 (1990).CrossRefGoogle Scholar
3Rabin, R. H. and Wright, R.N., Metall. Trans. A 23A, 35–40 (1992).CrossRefGoogle Scholar
4Varma, A. and Lebrat, J.P., Chem. Eng. Sci. 47, 2179–2194 (1992).CrossRefGoogle Scholar
5Merzhanov, A. G., in Combustion and Plasma Synthesis of High-Temperature Materials, edited by Munir, Z. A. and Holt, J. B. (VCH, New York, 1990), pp. 1–53.Google Scholar
6Vadchenko, S.G., Bulaev, A.M., Gal'chenko, Y. A., and Merzhanov, A.G., Combust. Explos. Shock Waves 23, 46–56 (1987).CrossRefGoogle Scholar
7Anselmi-Tamburini, U. and Munir, Z. A., in Combustion and Plasma Synthesis of High-Temperature Materials, edited by Munir, Z. A. and Holt, J. B. (VCH, New York, 1990), pp. 100–105.Google Scholar
8Toth, L. E., Transition Metal Carbides and Nitrides (Academic Press, New York, 1971), pp. 76–77.Google Scholar
9Benedict, R. P., Fundamentals of Temperature, Pressure, and Flow Measurements (John Wiley, New York, 1984), pp. 130–145.CrossRefGoogle Scholar
10Bird, R. B., Stewart, W. E., and Lightfoot, E. N., Transport Phenomena (John Wiley, New York, 1960), p. 310.Google Scholar
11Geiger, G.H. and Poirier, D. R., Transport Phenomena in Metallurgy (Addison-Wesley, Reading, MA, 1973), pp. 490–491.Google Scholar
12Deevi, S.C., Mater. Sci. Eng. A A149, 241–251 (1992).CrossRefGoogle Scholar
13Soffa, W. A., in Metals Handbook, 9th ed. (American Society of Metals, Metals Park, OH, 1985), Vol. 9, pp. 646–651.Google Scholar
14Samsonov, G. V. and Vinitskii, I. M., Handbook of Refractory Compounds (Plenum, New York, 1980), p. 223.CrossRefGoogle Scholar
15Rudy, E., Ternary Phase Equilibria in Transition Metal-Boron-Carbon-Silicon Systems, Part V. Compendium of Phase Diagram Data, reports issued under U.S. Air Force Contract AF33(615)-1249, 149 (1969).Google Scholar