Mechanochemical Synthesis of Nanophased Carbide TiC

  • I. Uvarova
  • M. Savyak
  • I. Timofeeva
  • L. Isayeva

Abstract

At topochemical reaction of interaction between two or more solid phases, the new nucleus is formed in most defective places on the surface of initial phases. Later the nucleus growth is taken place along with nucleation. The particle size of new phase will be depended on the correlation between rates of nucleation and nucleus growth. Nucleation velocity as well as nucleus growth rate increase with temperature. It is known, that the correlation between rates of nucleation and nucleus growth is higher the dispersivity of reaction products must is bigger. If the nucleus confluence (coalescence) is absent the degree of dispersivity can be so large that X-ray line will be not resolved. There is initial temperature of heterogeneous reaction, the more number of small new phase nucleus and in low initial temperatures the small number of more large particles are formed.

Keywords

Titanium Carbide Milling Expense Sponge 

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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • I. Uvarova
    • 1
  • M. Savyak
    • 1
  • I. Timofeeva
    • 1
  • L. Isayeva
    • 1
  1. 1.Institute for Probleme of Materials Science, NASUkraine

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