Journal of Materials Science

, Volume 13, Issue 7, pp 1464–1470 | Cite as

Effect of stress-induced phase transformation on the properties of polycrystalline zirconia containing metastable tetragonal phase

  • T. K. Gupta
  • F. F. Lange
  • J. H. Bechtold


Polycrystalline zirconia containing a high content of metastable tetragonal phase shows high strength (∼ 700 MPa), high fracture toughness (Kc = 6 to 9 MN m−3/2) and small grain size (<0.3jμm). The strength and grain size remain nearly constant over a wide range of tetragonal phase content (100 to 30%). At a low concentration of tetragonal phase <30%, there is a rapid decrease in strength accompanied by a rapid increase in grain size. These results are explained by means of a stress-induced phase transformation in the metastable tetragonal phase.


Polymer Grain Size Zirconia Phase Transformation Fracture Toughness 
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Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • T. K. Gupta
    • 1
  • F. F. Lange
    • 1
  • J. H. Bechtold
    • 1
  1. 1.Westinghouse Research and Development CenterPittsburghUSA

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