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Refractories and Industrial Ceramics

, Volume 39, Issue 9–10, pp 324–325 | Cite as

High-strength ceramics from Zr02

  • G. Ya. Akimov
  • V. G. Vereshchak
  • A. D. Vasil’ev
  • V. M. Timchenko
  • E. V. Chaika
  • A. D. Grabchuk
Research
  • 34 Downloads

Abstract

Specimens of powder fabricated by codeposition of zirconium and yttrium nitrates with the using special dry ing techniques and regranulation by the method of hot isostatic pressing have been tested in air allowing for the laws of compaction of granulated powder at a final firing temperature of about 1500°C. The resulting ma terial had the following properties: a density p = 5.91 g/cm (98% of the theoretical value), an ultimate bend ing strength a = 1100 MPa, and a crack resistance K = 19.5 MPa . rn A set of the specimens was sub jected to hot isostatic pressing after natural sintering and exhibited the following properties: p = 6.08 g/cm = 1400 MPa, K = 17.5 MPa · m1/2.

Keywords

Crack Resistance Press Mold Yttrium Nitrate Ultradisperse Powder Granulate Powder 
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.

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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • G. Ya. Akimov
    • 1
    • 2
    • 3
  • V. G. Vereshchak
    • 1
    • 2
    • 3
  • A. D. Vasil’ev
    • 1
    • 2
    • 3
  • V. M. Timchenko
    • 1
    • 2
    • 3
  • E. V. Chaika
    • 1
    • 2
    • 3
  • A. D. Grabchuk
    • 1
    • 2
    • 3
  1. 1.Donetsk Physicotechnical Institute of the National Academy of Sciences of UkraineDonetskUkraine
  2. 2.Dnepropetrovsk State Chemical Engi neering Institute of UkraineDnepropetrovskUkraine
  3. 3.Institute of Prob lems of Materials Science of the National Academy of Sciences of UkraineUkraine

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