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Journal of Materials Science

, Volume 27, Issue 19, pp 5348–5356 | Cite as

Fabrication and microstructure-mechanical property relationships in Ce-TZPs

  • J. Wang
  • X. H. Zheng
  • R. Stevens
Papers

Abstract

Ceria-stabilized tetragonal zirconia polycrystals(Ce-TZPs) have been fabricated via conventional sintering of commercially available electrofused and electrorefined CeO2-doped ZrO2 powder at 1550°C for various periods from 0.5–30 h. The resultant grain sizes of the sintered materials were in the range 2–15 μm. The sintering of such electrorefined powder appears to occur by a liquid state sintering process, evinced in terms of the grain-size dependence on sintering time at 1550°C and by direct TEM observation. The mechanical properties of the sintered materials have been characterized, including single-edge notch bend fracture toughness and three-point bend fracture strength. The grain-size dependence of these properties in the CeO2-stabilized tetragonal polycrystals is very much different from that in Y2O3 stabilized tetragonal zirconia polycrystals (Y-TZPs). The transformation plasticity, which is represented by the yield stress behaviour and the total strain to fracture, plays an important role in the microstructure-property interrelationship in the Ce-TZPs.

Keywords

Fracture Toughness Y2O3 Fracture Strength State Sinter Sintered Material 
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 1992

Authors and Affiliations

  • J. Wang
    • 1
  • X. H. Zheng
    • 2
  • R. Stevens
    • 3
  1. 1.IRC in Materials for High Performance ApplicationsThe University of BirminghamBirminghamUK
  2. 2.Department of Mechanical EngineeringBeijing Institute of TechnologyBeijingPeople's Republic of China
  3. 3.School of MaterialsThe University of LeedsLeedsUK

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