Refractories and Industrial Ceramics

, Volume 37, Issue 1–2, pp 21–26 | Cite as

Problem of evaluating the crack resistance in ceramics of Si3N4 and ZrO2

  • G. A. Gogotsi
  • V. I. Galenko
  • V. P. Zavada
  • B. A. Ozerskii
  • D. Yu. Ostrovoi
  • Toshiro Kobayashi
Research

Abstract

The mechanical behavior of silicon nitride and zirconium dioxide ceramics is investigated in a wide temperature range. Much attention is paid to crack resistance under the conditions of the ambient. Data obtained by different methods used for evaluating crack resistance are analyzed, and it is shown that the best results have been obtained in tests in which the concentrator was an indentation of a Vickers pyramid. The analysis was conducted using fractographic investigations of the materials and data of tests of a model material of zirconium dioxide.

Keywords

Silicon Dioxide Zirconium Nitride Pyramid 

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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • G. A. Gogotsi
    • 1
  • V. I. Galenko
    • 1
  • V. P. Zavada
    • 1
  • B. A. Ozerskii
    • 1
  • D. Yu. Ostrovoi
    • 1
  • Toshiro Kobayashi
    • 2
  1. 1.Institute of Strength Problems of the National Academy of Sciences of UkraineKievUkraine
  2. 2.Technological UniversityToyehashiJapan

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