Abstract
Thermodynamic modeling of the synthesis of tantalum monocarbide via the carbothermic reduction of tantalum(V) oxide indicates that TaC synthesis is thermodynamically plausible below 1000°C at pressures from 1 × 10−5 to 1 × 10−4 MPa. Using a Ta(OC5H11)5 solution in n-pentanol, we prepared a transparent tantalum-carbon containing gel and then a fine-particle Ta2O5 + C mixture, which was used to synthesize tantalum monocarbide at temperatures from 850 to 1200°C and pressures from 10−5 to 10−4 MPa. The elemental and phase compositions of the samples were determined, and the morphology of the TaC particles was examined by electron microscopy.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Kuznetsov, N.T., Sevastyanov, V.G., Simonenko, E.P., et al., RF Patent 2333888, 2008.
Horz, G., Group IVa and Va Transition Metal Interactions with Carbon and Hydrocarbons, J. Less-Common Met., 1984, vol. 100, no. 1, pp. 249–275.
Massot, L., Chamelot, P., Winterton, P., and Taxil, P., Preparation of Tantalum Carbide Layers on Carbon Using the Metalliding Process, J. Alloys Compd., 2009, vol. 471, nos. 1–2, pp. 561–566.
Cardarelli, F., Materials Handbook, London: Springer, 2008, 2nd ed.
Adamovskii, A.A., Carbides of Transition Metals in Abrasive Machining, Powder Metall. Met. Ceram., 2007, vol. 46, nos. 11–12, pp. 595–607.
Hans, W.Ch., Borom, M.P., and Johnson, C.A., US Patent 5 851678.
Li, Ch.-W., US Patent Application 20090098346.
II’chenko, N.I., Pyatnitskii, Yu.I., and Pavlenko, N.V., Catalytic Properties of the Carbides of Transition Metals in Oxidation Reactions, Theor. Exp. Chem., 1998, vol. 34, no. 5, pp. 239–256.
Choi Jeong-Gil, The Influence of Surface Properties on Catalytic Activities of Tantalum Carbides, Appl. Catal., A, 1999, vol. 184, no. 2, pp. 189–201.
Tantalum Oxides, in Khimicheskaya entsiklopediya (Chemical Encyclopedia), Moscow: Bol’shaya Rossiiskaya Entsiklopediya, 1995, vol. 5, pp. 983–984.
Gurvich, L.V., Iorish, V.S., Chekhovskoy, D.V., et al., IVTANTERMO-A Thermodynamic Database and Software System for the Personal Computer: User’s Guide, Boca Raton: CRC, 1993.
Sevast’yanov, V.G., Pavelko, R.G., and Kuznetsov, N.T., Effect on the Nature of Fine-Particle Carbon Precursors on the Morphology of Silicon Carbide Nanoparticles, Khim. Tekhnol., 2007, no. 1, pp. 12–17.
Ezhov, Yu.S., Sevast’yanov, V.G., and Simonenko, E.P., Thermodynamic Analysis of the Ta2O5 + C Equilibrium, Nauchn. Tr. Inst. Teplofiz. Ekstrem. Sost. OIVT Ross. Akad. Nauk, 2005, no. 7, pp. 87–93.
Barin, I., Knacke, O., and Kubaschewski, O., Thermochemical Properties of Inorganic Substances, Berlin: Springer, 1977.
Bansal, N.P., Low-Temperature Synthesis, Pyrolysis and Crystallization of Tantalum Oxide Gels, J. Mater. Sci., 1994, vol. 29, pp. 5065–5070.
Zhabrev, V.A., et al., Effect of Heat Treatment on the Structure of Tantalum Oxide Films Grown on Titanium, Pis’ma Zh. Tekh. Fiz., 2004, vol. 30, no. 10, pp. 1–6.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.G. Sevast’yanov, E.P. Simonenko, N.A. Ignatov, Yu.S. Ezhov, N.T. Kuznetsov, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 5, pp. 563–569
Rights and permissions
About this article
Cite this article
Sevast’yanov, V.G., Simonenko, E.P., Ignatov, N.A. et al. Low-temperature synthesis of TaC through transparent tantalum-carbon containing gel. Inorg Mater 46, 495–500 (2010). https://doi.org/10.1134/S0020168510050109
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168510050109