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Journal of Materials Science

, Volume 29, Issue 20, pp 5374–5382 | Cite as

Effect of additives on densification and deformation of tetragonal zirconia

  • M. M. R. Boutz
  • A. J. A. Winnubst
  • F. Hartgers
  • A. J. Burggraaf
Papers

Abstract

The effect of additives (Bi2O3, Fe2O3) on densification and creep rates of tetragonal ZrO2-Y2O3 has been investigated. In Bi2O3-doped Y-TZP, a reactive liquid forms at temperatures above 800–900‡C, which leads to a strong enhancement of densification for concentrations of 1–2 mol % Bi2O3. However, during cooling from the processing temperature a strong, undesirable transformation of the tetragonal to the monoclinic phase occurs. The addition of 0.6–1.2 mol % FeO3/2 promotes densification without destabilizing the tetragonal phase. A concentration of 1.2 mol %, however, induces discontinuous grain growth, while this is not the case for 0.6 mol %. Creep rates of Y-TZP were enhanced by a factor of 4–6 by adding 0.6 mol % FeO3/2.

Keywords

Polymer Zirconia Fe2O3 Processing Temperature Creep Rate 
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

© Chapman & Hall 1994

Authors and Affiliations

  • M. M. R. Boutz
    • 1
  • A. J. A. Winnubst
    • 1
  • F. Hartgers
    • 1
  • A. J. Burggraaf
    • 1
  1. 1.Faculty of Chemical Technology, Laboratory for Inorganic Chemistry, Materials Science and CatalysisUniversity of TwenteAE EnschedeThe Netherlands

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