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Soviet Powder Metallurgy and Metal Ceramics

, Volume 7, Issue 4, pp 297–298 | Cite as

Enthalpy and specific heat of tantalum carbide in its homogeneity region

  • A. S. Bolgar
  • E. A. Guseva
  • V. A. Gorbatyuk
  • V. V. Fesenko
Test Methods and Properties of Materials
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Conclusions

  1. 1.

    Using the method of mixing in a massive calorimeter, measurements were made of the enthalpy of the carbides TaC0.70, TaC0.78, TaC0.85, and TaC0.99 over the temperature range 1200–2200°K.

     
  2. 2.

    The specific heat of the cubic tantalum carbide TaCx in its homogeneity region over the temperature range 1200–2200°K can be described, as a function of temperature, by the equation:Cp=7.3−1.5· 10−3T+(0.773+1. 467·10−3T·ex.

     
  3. 3.

    The results obtained together with literature data were used in compiling a table of values of enthalpy, specific heat, entropy, and reduced thermodynamic potential for the carbide TaC0.99 over the temperature range 298–2500°K.

     

Keywords

Entropy Carbide Enthalpy Calorimeter Tantalum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Literature cited

  1. 1.
    K. K. Kelley, J. Am. Chem. Soc.,62, 818 (1940).Google Scholar
  2. 2.
    L. S. Levinson, J. Chem. Phys.,39, 1550 (1963).Google Scholar
  3. 3.
    O. Kubaschewski and E. Evans, Metallurgical Thermochemistry, Pergamon Press, London-New York-Paris-Los Angeles (1958).Google Scholar
  4. 4.
    E. A. Guseva, A. S. Bolgar, S. P. Gordienko, V. A. Gorbatyuk, and V. V. Fesenko, Teplofiz. Vys. Temp.,4, 649 (1966).Google Scholar

Copyright information

© Consultants Bureau 1968

Authors and Affiliations

  • A. S. Bolgar
    • 1
  • E. A. Guseva
    • 1
  • V. A. Gorbatyuk
    • 1
  • V. V. Fesenko
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUSSR

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