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Synthesis and Kinetics for Nanocrystalline Titanium Carbide upon Metallothermic Reduction of Liquid Chlorides

  • Proceedings of the Topical Meeting of the European Ceramic Society “Nanoparticles, Nanostructures, and Nanocomposites”
  • (St. Petersburg, Russia, July 5–7, 2004)
  • Published:
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Abstract

Nanosized titanium carbide particles were synthesized by the reaction of liquid magnesium and vaporized TiCl4 + CxCl4 (x = 1, 2) solution. Fine titanium carbide particles about 50 nm in size were successfully produced by combining Ti and C atoms released by the chloride reduction of magnesium, and a vacuum was then used to remove the residual phases of MgCl2 and excess Mg. Small amounts of impurities such as O, Fe, Mg, and Cl were detected in the product, but such a problem can be solved by more precise control of the process. The lattice parameter of the product was 0.43267 nm, which is near the standard value. With respect to the reaction kinetics, the activation energy for the reactions of TiCl4 + C2Cl4 and Mg was found to be 69 kJ/mol, which was about half of the value of the reaction with TiCl4 + CCl4, and the higher reactivity of the former contributed to an increase in the stoichiometry to the level of TiC0.96 and to a decrease in the free carbon content to below 0.3 wt %.

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Authors and Affiliations

  1. Nanopowder Metallurgy Group, Korea Institute of Machinery and Materials (KIMM), 66 Sangnam, Changwon, Kyungnam, 641-010, Korea

    D. W. Lee, D. Kim & B. K. Kim

  2. Faculty of Nonferrous Materials, St. Petersburg State Mining Institute, Dvadtsat’ pervaya liniya, St. Petersburg, Russia

    S. V. Alexandrovskii

  3. Faculty of Materials Science, St. Petersburg State Polytechnical University, ul. Politekhnicheskaya 29, St. Petersburg, Russia

    O. V. Tolochko

Authors
  1. D. W. Lee
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  2. S. V. Alexandrovskii
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  3. O. V. Tolochko
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  4. D. Kim
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  5. B. K. Kim
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Original English Text Copyright © 2005 by Fizika i Khimiya Stekla, Lee, Alexandrovskii, Tolochko, D. Kim, B. Kim.

This article was submitted by the authors in English.

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Lee, D.W., Alexandrovskii, S.V., Tolochko, O.V. et al. Synthesis and Kinetics for Nanocrystalline Titanium Carbide upon Metallothermic Reduction of Liquid Chlorides. Glass Phys Chem 31, 549–553 (2005). https://doi.org/10.1007/s10720-005-0097-6

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  • DOI: https://doi.org/10.1007/s10720-005-0097-6

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