Skip to main content
SpringerLink
Log in

Thermal analysis of transition metal and rare earth oxide system-gas interactions by a solid electrolyte-based coulometric technique

  • Inorganic Compounds
  • Published:
Journal of thermal analysis Aims and scope Submit manuscript

Abstract

The oxidation-reduction behaviour of transition metal and rare earth oxide systems in oxygen potential controlled atmospheres was investigated by means of a solid electrolyte-based coulometric technique (SEC) in carrier gas mode to obtain information concerning the extent of oxygen stoichiometry, thep-T-x diagram of any mixed oxide phase, the kinetics of the oxygen exchange and the phase transitions.

The direct coupling of SEC and electrical conductivity measurements provides further information about the relationship between oxygen deficiency and conductivity, especially as concerns the oxygen mobility and the transition from ionic to mixed ionic/electronic conductivity in any system.

In the fluorite-type phases PrO2−x, Ce0.8Pr0.2Oy−x and Ce0.8Sr0.08Pr0.12Oy−x, the higher oxidation state of Pr is stabilized and the electrical conductivity increases in this sequence. The perovskite-type phase Sr1−yCeyFeO3−x, shows transitions and a second phase reflected in the temperature-programmed spectrum of this substance. The electrical conductivity of Sr0.9Ce0.1FeO3−x changes fromn-type top-type with increasing oxygen pressure.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K. Teske, E. Syskakis and S. Naoumidis, Proc. 14th Risø International Symposium on Materials Science, Denmark 1993.

  2. K. Teske, W. Anwand and K. Fischer, J. Alloys and Compounds, 195 (1993) 671.

    Article  CAS  Google Scholar 

  3. K. Teske, Materials Science Forum, 76 (1991) 269.

    Article  CAS  Google Scholar 

  4. K. Teske, C. Nebelung, H. Ullmann, I. I. Kapshukov, L. V. Sudakov and A. S. Bevz, J. Nucl. Mater., 188 (1992) 226.

    Article  CAS  Google Scholar 

  5. M. Bode, K. Teske and H. Ullmann, GIT-Fachz. Lab., 38 (1994) 495.

    CAS  Google Scholar 

  6. H. Ullmann, N. Trofimenko and J. Paulsen, paper to be presented at 17th Risø International Symposium on Materials Science.

  7. N. Trofimenko, H. Ullmann, J. Paulsen and R. Müller, Solid State Ionics, to be published.

  8. B. Ma, U. Balchandran, J.-H. Park and C. U. Segre, Solid State Ionics, 83 (1996) 65.

    Article  CAS  Google Scholar 

  9. V. V. Vashook, M. V. Zinkevich, H. Ullmann and K. Teske, paper to be presented at 17th Risø International Symposium on Materials Science.

  10. M. Nauer, Ch. Ftikos and B. C. H. Steele, J. Europ. Ceram. Soc., (1994) 493.

  11. H. Ullmann and K. Teske, 4th Int. Symp. on Systems with Fast Ionic Transport, Warszawa, 10–14 May 1994, Proc., Trans. Tech. Publ. Aedermannsdorf 1994.

    Google Scholar 

  12. F. W. Poulsen, G. Lauvstad and R. Tunold, Solid State Ionics, 72 (1994) 47.

    Article  CAS  Google Scholar 

  13. M. Bode and K. Teske, GIT-Fachz. Lab., 40 (1996) 209.

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Inorganic Chemistry, Dresden Technical University, Germany

    K. Teske, H. Ullmann & N. Trofimenko

Authors
  1. K. Teske
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. H. Ullmann
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. N. Trofimenko
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Teske, K., Ullmann, H. & Trofimenko, N. Thermal analysis of transition metal and rare earth oxide system-gas interactions by a solid electrolyte-based coulometric technique. Journal of Thermal Analysis 49, 1211–1220 (1997). https://doi.org/10.1007/BF01983677

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01983677

Keywords

Search

Navigation