Soviet Powder Metallurgy and Metal Ceramics

, Volume 5, Issue 12, pp 981–986 | Cite as

Regularities governing the thermal stability of oxides of the transition metals

  • Ya. S. Malakhov
  • G. V. Samsonov
Papers of the Fifth Seminar of the Institute
  • 61 Downloads

Conclusions

  1. 1.

    We have considered data available in the literature on the melting points and thermal stability of transition metal oxides (with different degrees of oxidation) in comparison with the features of the electronic structure of the transition metals and oxygen.

     
  2. 2.

    It is demonstrated that the melting points and thermal stability of the oxides are determined by the nature of the distribution of valent electrons from the components over localized and nonlocalized ones and by the probability of the formation of stable electron configurations of transition metal and oxygen atoms. The drop in statistical weight of stable configurations and increase in proportion of nonlocalized electrons results in a drop in melting point and thermal stability of the oxides.

     

Keywords

Oxide Oxygen Thermal Stability Melting Point Oxygen Atom 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    L. Pauling, Proc. of the Nation. Acad. of Sciences of the USA, June, 1953, p. 551.Google Scholar
  2. 2.
    S. A. Shchukarev, Zhokh, No. 4 (1954).Google Scholar
  3. 3.
    A. A. Litvakovskii, Coll. Physical-Chemical Bases of Ceramics [in Russian], edited by P. P. Budnikov, Moscow (1956).Google Scholar
  4. 4.
    G. V. Samsonov, Ukr. khim. zh. 31, 1233 (1965).Google Scholar
  5. 5.
    G. V. Samsonov, Izv. AN SSSR, series Inorg. materials, 1, 1803 (1965).Google Scholar
  6. 6.
    G. V. Samsonov, Yu. B. Paderno, and V. S. Fomenko, Ukr. fiz. zh., 10, 622 (1965).Google Scholar
  7. 7.
    G. V. Samsonov and V. S. Sinel'nikov, Izv. AN SSSR, series Inorgan. materials, 1, 1071 (1965).Google Scholar
  8. 8.
    G. V. Samsonov, Coll. Metals science and metal physics of superconductors [in Russian], Nauka Press, Moscow (1965), pp. 65–71.Google Scholar
  9. 9.
    G. V. Samsonov, Ukr. khim. zh., 31, 1005 (1965).Google Scholar
  10. 10.
    G. V. Samsonov and I. A. Podchernyaeva, Izv. AN SSSR, series Inorgan. materials, 2, 128 (1966).Google Scholar
  11. 11.
    High temperature engineering, edited by I. Z. Campbell, For. Lit. Press, Moscow (1959).Google Scholar
  12. 12.
    Physics Encyclopedic Dictionary, Vol. 4 (1965), p. 116.Google Scholar

Copyright information

© Consultants Bureau 1966

Authors and Affiliations

  • Ya. S. Malakhov
    • 1
  • G. V. Samsonov
    • 1
  1. 1.Zhdanov Metallurgical InstituteUSSR

Personalised recommendations