Abstract
Conductive TiB2–AlN ceramics were prepared by self-propagating high-temperature synthesis in a filtration combustion regime at high nitrogen pressures. The effect of nitrogen pressure on the combustion rate and the Al metal content of the reaction product was studied. The combustion rate was also shown to depend on the composition of the starting mixture. The phase composition of the ceramics was determined by x-ray diffraction, chemical analysis, and microstructural examination. The porosity, electrical resistivity, and bending strength of the ceramics were measured. The resistivity of the materials was found to change sharply at a TiB2 content of 19 vol %. This effect was interpreted as due to the formation of a fractal structure.
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REFERENCES
Samsonov, G.V., Nitridy (Nitrides), Kiev: Naukova Dumka, 1969, p. 380.
Von Kieffer, R. and Benesovsky, F., Hartstoffe und Hartmetalle, Vienna: Springer, 1963, 2nd ed. Translated under the title Tverdye materialy, Moscow: Metallurgiya, 1968
Samsonov, G.V., Serebryakova, T.I., and Neronov, V.A., Boridy (Borides), Moscow: Atomizdat, 1975, p. 375.
Weimer, W., Carbide, Nitride, and Boride Materials: Synthesis and Processing., London: Chapman & Hall, 1997, pp. 228–271.
Gogotsi, G.Y. and Andrievski, R.A., Materials Science of Carbides, Nitrides, and Borides, Dordrecht: Kluwer, 1999, pp. 267–284.
Zdaniewski, W.A., Stereoscopic Fractography of Crack Propagation Phenomena in a TiB2–AlN Composite, J. Am. Ceram. Soc., 1989, vol. 72, no. 1, pp. 116–121.
Merzhanov, A.G. and Borovinskaya, I.P., Self-Propagating High-Temperature Synthesis of Refractory Inorganic Compounds, Dokl. Akad. Nauk SSSR, 1972, vol. 204, no. 2, p. 366.
Borovinskaya, I.P., Loryan, V.E., and Shekk, G.Yu., Preparation of AlN-Based Ceramics via Combustion and Their Properties, XIII nauchno-tekhnicheskaya konferentsiya po konstruktsiyam i tekhnologii polucheniya izdelii iz nemetallicheskikh materialov (XIII Conf. on the Design and Fabrication of Articles from Nonmetallic Materials), Obninsk, 1992, p. 6.
Filonov, M.P., Levashov, E.A., Shulzhenko, A.N., et al., Industrial Application of SHS Heat-Resistant Materials, Int. J. Self-Propag. High-Temp. Synth., 2000, vol. 9, no. 1, pp. 115–121.
Merzhanov, A.G., Borovinskaya, I.P., and Volodin, Yu.E., On the Mechanism of Combustion of Porous Metallic Materials in Nitrogen, Dokl. Akad. Nauk SSSR, 1972, vol. 206, no. 4, pp. 905–908.
Aldushin, A.P. and Merzhanov, A.G., Propagation of Heat Waves in Heterogeneous Media, in Teoriya fil'tratsionnogo goreniya: Obshchie predstavleniya i sostoyanie issledovanii (Theory of Filtration Combustion: General Concepts and Critical Issues), Novosibirsk: Nauka, 1988, p. 288.
Borovinskaya, I.P., Bunin, V.A., Vishnyakova, G.A., and Karpov, A.V., Some Specific Features of Synthesis and Characteristics of (TiB2 AlN–BN)-Based Ceramic Materials, Int. J. Self-Propag. High-Temp. Synth., 1999, vol. 8, no. 4, pp. 451–457.
Odelevskii, V.I., Calculation of the Generalized Conductivity of Heterogeneous Systems, Zh. Tekh. Fiz., 1951, vol. 21, no. 6, pp. 678–685.
Frolov, Yu.V. and Pivkina, A.N., Fractal Structure and Energy Release (Combustion) Behavior of Heterogeneous Condensed Systems, Fiz. Goreniya Vzryva, 1997, vol. 33, no. 5, pp. 3–19.
Mandelbrot, B.B., The Fractal Geometry of Nature, San Francisco: Freeman, 1982, p. 260.
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Bunin, V.A., Karpov, A.V. & Senkovenko, M.Y. Fabrication, Structure, and Properties of TiB2–AlN Ceramics. Inorganic Materials 38, 746–749 (2002). https://doi.org/10.1023/A:1016261029648
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DOI: https://doi.org/10.1023/A:1016261029648