Journal of Materials Science

, Volume 26, Issue 18, pp 5047–5052 | Cite as

Hydrothermal stability of yttria- and ceria-doped tetragonal zirconia-alumina composites

  • Masanori Hirano
  • Hiroshi Inada


Changes in the crystalline phase and microstructure resulting from hydrothermal ageing of Y-TZP, (Y,Ce)-TZP, Y-TZP-Al2O3 composites and (Y,Ce)-TZP-Al2O3 composites were investigated under hydrothermal conditions at 180 °C and 1 MPa. Although (Y,Ce)-TZP showed no tetragonal-to-monoclinic (t→m) phase transformation during low-temperature ageing in air as compared with 3Y-TZP, the tetragonal phase of (Y,Ce)-TZP easily transformed to monoclinic phase by ageing under hydrothermal condition. This t→m phase transformation invaded the inside of the body accompanied by microcracks. (Y,Ce)-TZP-Al2O3 composites were resistant to phase transformation during hydrothermal ageing.


Polymer Microstructure Phase Transformation Yttria Crystalline Phase 
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Copyright information

© Chapman & Hall 1991

Authors and Affiliations

  • Masanori Hirano
    • 1
  • Hiroshi Inada
    • 1
  1. 1.Noritake Co. LtdNagoya-shiJapan

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