Refractories

, Volume 21, Issue 5–6, pp 327–330 | Cite as

Sintering and some properties of mullite-corundum ceramic obtained from pure oxides

  • S. M. Brekhovskikh
  • A. L. Gorodnev
Research

Conclusions

The effect of the total concentration of SiO2 and the method of preparation of the batch on the sintering and some of the properties of a mullite-corundum ceramic made from pure oxides has been studied.

It is established that the sintering of the ceramic made from batches of various compositions containing mixtures of SiO2 and Al2O3 is significantly more difficult than when analogous batches containing previously sintered mullite are used. With an increase in the concentration of Al2O3 in the batch with the previously synthesized mullite, the apparent density and strength increase while the open porosity decreases.

The sintering of the mullite-corundum ceramic of the composition 10% SiO2+90% Al2O3 containing previously sintered mullite differs from corundum and mullite by its significantly higher thermal-shock resistance.

Keywords

Oxide Porosity SiO2 Al2O3 Total Concentration 
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.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    D. N. Poluboyarinov and G. I. Ryakhovskaya, Ogneupory, No. 6 (1954).Google Scholar
  2. 2.
    V. S. Bakunov, Wu Nrok Kyung, M. I. Agafonova, et al., Ogneupory, No. 4 (1974).Google Scholar
  3. 3.
    Wu Nrok Kyung, “Some problems in the sintering and properties of a mullite ceramic as a function of its purity,” Candidate's Dissertation, Moscow (1973).Google Scholar
  4. 4.
    E. B. Kroll', “The sintering process of a mullite ceramic synthesized from technically pure reagents,” Candidate's Dissertation, Moscow (1966).Google Scholar
  5. 5.
    A. Neuhaus and W. Richartz, Ber. Deutsch. Keram. Ges.,35, No. 4 (1958).Google Scholar
  6. 6.
    L. I. Mirkin, Handbook of X-Ray Structural Analysis of Polycrystalline Aggregates [in Russian], Moscow (1961).Google Scholar
  7. 7.
    S. M. Brekhovskikh and A. L. Gorodnev, Ogneupory, No. 9 (1979).Google Scholar
  8. 8.
    A. I. Natsenko, I. S. Kainarskii, and I. G. Orlova, Neorg. Mater., No. 2 (1972).Google Scholar
  9. 9.
    I. I. Kabakova, N. V. Pisareva, E. V. Degtyareva, et al., Ogneupory, No. 10 (1974).Google Scholar

Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • S. M. Brekhovskikh
  • A. L. Gorodnev

There are no affiliations available

Personalised recommendations