Powder Metallurgy and Metal Ceramics

, Volume 48, Issue 5–6, pp 326–329 | Cite as

Thermodynamic properties of silicon-rich holmium silicides

  • L. V. Goncharuk
  • V. R. Sidorko
  • Yu. I. Buyanov

The free Gibbs energy, enthalpy, and entropy of formation of silicon-rich holmium silicides HoSi2–a (HoSi1.82), HoSi2–b (HoSi1.67), Ho3Si4, and HoSi from solid components are determined by measuring electromotive forces between 710 and 930 K. The thermodynamic functions of formation of HoSi1.67 and Ho3Si4 from individual components are determined for the first time.


thermodynamic properties Gibbs energy enthalpy entropy holmium silicon 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    V. N. Eremenko, V. E. Listovnichii, S. P. Luzan, et al., “Phase equilibria and constitution of alloys in the holmium–silicon system,” in: Phase Equilibria, Phase Stability, and Metastable States in Metal Systems [in Russian], Inst. Probl. Materialoved. NAN Ukrainy, Kiev (1993), pp. 32–48.Google Scholar
  2. 2.
    V. N. Eremenko, V. E. Listovnichii, S. P. Luzan, et al., “Phase diagram and physical properties of holmium–silicon alloys,” Protsessy Lit’ya, No. 2, 66–74 (1994).Google Scholar
  3. 3.
    V. N. Eremenko, V. E. Listovnichii, S. P. Luzan, et al., “Phase diagram of the holmium-silicon binary system and physical properties of holmium silicides up to 1050°C,” J. All. Compd., 219, No. 2, 181–184 (1995).CrossRefGoogle Scholar
  4. 4.
    S. P. Luzan, Phase Equilibria in the Holmium–Silicon and Erbium–Silicon Systems and Some Physical Properties of Their Alloys [in Russian], Author’s Abstract of PhD Thesis, Kiev (1996), p. 21.Google Scholar
  5. 5.
    J. Roger, V. Babizhetskyy, T. Guizouarn, et al., “The ternary RE–Si–B systems (RE = Dy, Ho, Er, and Y) at 1270 K: solid state phase equilibria and magnetic properties of the solid solution REB2–xSix (RE = Dy and Ho),” J. All. Compd., 417, 72–84 (2006).CrossRefGoogle Scholar
  6. 6.
    I. Ijjaali, G. Venturini, and B. Malaman, “X-ray single crystal refinement of the Ho3Si4 structure,” J. All. Compd., 269, 6–8 (1998).CrossRefGoogle Scholar
  7. 7.
    S. V. Meschel and O. J. Kleppa, “Standard enthalpies of formation of some carbides, silicides, germanides and borides of holmium by high temperature direct synthesis calorimetry,” J. All. Compd., 247, 52–56 (1997).CrossRefGoogle Scholar
  8. 8.
    G. I. Batalin, V. S. Sudavtsova, and N. V. Stroganova, “Enthalpy of formation of liquid binary alloys in the Si–La (Gd, Dy, Ho, Er) system,” Ukr. Khim. Zh., 51, No. 7, 775–777 (1985).Google Scholar
  9. 9.
    I. Mateiko, V. Sudavtsova, N. Kotova, and N. Sharkina, “Thermodynamic properties of Si–REM and Si–Al–REM melts,” Visn. Kyiv. Nat. Univ., 46, 50–52 (2008).Google Scholar
  10. 10.
    N. P. Gorbachuk, A. S. Bolgar, and V. B. Muratov, “Heat capacity of DySi2 and HoSi1.67 at temperatures of 55–300 K,” Powder Metall. Met. Ceram., 40, No. 3–4, 183–186 (2001).Google Scholar
  11. 11.
    N. P. Gorbachuk and A. S. Bolgar, “The enthalpies of DySi2 and HoSi1.67 at 298.15–2007 K. Phase transformation enthalpies,” Powder Metall. Met. Ceram., 41, No. 3–4, 173–176 (2002).CrossRefGoogle Scholar
  12. 12.
    B. G. Korshunov, V. V. Sazonov, and D. V. Drobot, Phase Diagrams of Chloride Systems [in Russian], Khimiya, Leningrad (1972), p. 384.Google Scholar
  13. 13.
    L. F. Yamshchikov, V. A. Lebedev, S. P. Rasponin, and P. A. Arkhipov, “Thermodynamics of formation of holmium monobismuthide and monoantimonide,” Izv. Vuzov. Tsvet. Metallurg., No. 6, 106–108 (1985).Google Scholar
  14. 14.
    V. I. Goryacheva, Ya. I. Gerasimov, and V. P. Vasil’ev, “Thermodynamic study of holmium and erbium monoantimonides with the electromotive force method,” Zh. Fiz. Khim., 55, No. 4, 1080–1082 (1981).Google Scholar
  15. 15.
    R. V. Antonchenko, L. V. Goncharuk, and V. R. Sidorko, “Thermodynamic of formation of holmium monobismuthide,” in: Proc. Int. Conf. HighMatTech (October 15–19, 2007), Kiev (2007), p. 122.Google Scholar
  16. 16.
    “Compact representation of experimental data in publishing thermochemical and thermodynamic research: Recommendation by the Scientific Council on Chemical Thermodynamics and Thermochemistry of the USSR Academy of Sciences,” Zh. Fiz. Khim., 46, No. 11, 2975–2979 (1972).Google Scholar
  17. 17.
    V. N. Eremenko, G. M. Lukashenko, and V. R. Sidorko, “Thermodynamics of compounds of vanadium, chromium, and manganese and p-elements,” in: Physical Chemistry of Inorganic Materials (3 Vols.) [in Russian], Vol. 1, Naukova Dumka, Kiev (1988), pp. 9–70.Google Scholar
  18. 18.
    V. N. Kornilov and L. B. Stepina, “Some issues of statistical treatment of thermodynamic data. IV. Joint treatment of several linear equations,” Zh. Fiz. Khim., 44, No. 8, 1932–1939 (1970).Google Scholar
  19. 19.
    V. P. Glushko (ed.), Thermal Constants of Substances: Handbook (in 10 Vols.) [in Russian], VINITI, Moscow (1970), Vol. 4, Part 1, p. 509; Moscow (1978), Vol. 8, Part 1, p. 536.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • L. V. Goncharuk
    • 1
  • V. R. Sidorko
    • 1
  • Yu. I. Buyanov
    • 1
  1. 1.Frantsevich Institute for Problems of Materials ScienceNational Academy of Sciences of UkraineKievUkraine

Personalised recommendations