Skip to main content
SpringerLink
Log in

Sintering of powders in the Al2O3-ZrO2-Y2O3 system obtained by the method of rapid solidification of the melt as a function of the initial heat treatment

  • Research
  • Published:
Refractories and Industrial Ceramics Aims and scope

Abstract

The effect of heat treatment at 1340 — 1450°C on the sintering of ceramic powders of the A12O3-ZrO2-Y2O3 system obtained by the method of rapid solidification of the melt is considered. It is shown that in this temperature range powder particles undergo crystallization of the amorphous phase and an ε-A12O3 → α-A12O3 transformation with the formation of an intraparticle ultradisperse polycrystalline structure of an eutectic type. The system attains a thermodynamically equilibrium state. However, the sinterability of compacts from such powders increases substantially, which is associated with the elevated contribution of the intraparticle grain boundary diffusion into the diffusion mass transfer.

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. N. Claussen, G. Lindemann, and G. Petzov, “Rapid solidification of the A12O3-ZrO2 system,”Ceram. Ind.,9(3), 83–86 (1983).

    Article  CAS  Google Scholar 

  2. V. A. Kryuchkov, L. P. Ivanova, A. V. Galakhov, et al., “A12O3-ZrO2 ceramics from powders obtained by the method of rapid hardening from the melt,”Ogneupory, No. 6, 19–22 (1989).

  3. A. V. Galakhov, V. A. Kryuchkov, L. P. Ivanova, et al., “Structure and phase composition of powders in the A12O3-ZrO2-Y2O3, system,”Neorg. Mater.,26(4), 823–827 (1990).

    CAS  Google Scholar 

  4. G. Cevales, “Phase equilibrium diagram of alumina-zirconia and examination of new phase 99% A12O3-1% ZrO2(ε-A12O3),”Bar. Bent. Keram. Ges.,45(5), 216–219 (1968).

    CAS  Google Scholar 

  5. V. I. Grishaev and V. I. Tostanovskii, “Special features of oxide structural ceramics from mechanically milled powders,”Ogneupory, No. 2, 20–23 (1993).

  6. B. A. Nebder, R. P. Ingel, W. I. Donough, and J. R. Spann, “Novel ceramic microstructures from advanced processing,”Adv. Ceram. Mater.,1(2), 137–144(1986).

    Google Scholar 

  7. M. Yoshimura, M. Kaneko, and S. Somiya, “Crystallization of amorphous materials by rapid quenching of melt in the system ZrO2,-SiO2,-A12O3,”J. Ceram. Soc. Jpn.,95(2), 202–208 (1987).

    CAS  Google Scholar 

  8. E. B. Slamovich and F. E. Lange, “Densification behavior of single-crystal and polycrystalline spherical particles of zirconia,”J. Am. Ceram. Soc.,73(11), 3368–3375 (1990).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Khimtekh Company, Obninsk, Moscow, Russia

    V. A. Kryuchkov

  2. Moscow State Aircraft Engineering Institute, Moscow, Russia

    A. V. Galakhov

Authors
  1. V. A. Kryuchkov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. V. Galakhov
    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

Kryuchkov, V.A., Galakhov, A.V. Sintering of powders in the Al2O3-ZrO2-Y2O3 system obtained by the method of rapid solidification of the melt as a function of the initial heat treatment. Refract Ind Ceram 39, 237–238 (1998). https://doi.org/10.1007/BF02765072

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02765072

Keywords

Search

Navigation