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Journal of Materials Science

, Volume 43, Issue 5, pp 1599–1611 | Cite as

Production and characterization of ZrO2 ceramics and composites to be used for hip prosthesis

  • Melis Arin
  • Gultekin GollerEmail author
  • Jef Vleugels
  • Kim Vanmeensel
Article

Abstract

Tetragonal ZrO2 polycrystalline (TZP) ceramics with varying yttria and ceria content (2–3 mol%) and distribution (coated or co-precipitated), and varying second phase content Al2O3 were prepared and investigated by means of microstructural analysis, mechanical properties, and hydrothermal stability, and ZrO2-based composites with 35–60 vol% of electrical conductive TiN particles were developed. The effects of stabilizer content and means of addition, powder preparation, sintering conditions, and grain size have been systematically investigated. Fully dense Y-TZP ceramics, stabilized with 2–3 mol% Y2O3, 2 wt% Al2O3 can be achieved by hot pressing at 1,450 °C for 1 h. The hydrothermal stability increased with increasing overall yttria content. The jet-milled TiN powder was used to investigate the ZrO2–TiN composites as function of the TiN content. The experimental work revealed that fully dense ZrO2–TiN composites, stabilized with 1.75 mol% Y2O3, 0.75 wt% Al2O3, and a jet-milled TiN content ranging from 35 to 60 vol% could be achieved by hot pressing at 1,550 °C for 1 h. Transformation toughening was found as the primary toughening mechanism. The decreasing hardness and strength could be attributed to an increasing TiN grain size with increasing TiN content, whereas the decreasing toughness might be due to the decreasing contribution of transformation toughening from the tetragonal to monoclinic ZrO2 phase transformation. The E modulus increases linearly with increasing TiN content, whereas the hydrothermal stability increases with addition of TiN content.

Keywords

Fracture Toughness Hydrothermal Stability Tetragonal ZrO2 Monoclinic ZrO2 Yttria Content 

Notes

Acknowledgements

M. Arin would like to thank International Coordination of Istanbul Technical University and Kathoieke Univesiteit Leuven for giving an opportunity to study in the framework of Erasmus exchange programme. M. Arin also thanks to the laboratory technician H. H. Sezer and Research Assistant V. Ezirmik in Istanbul Technical University.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Melis Arin
    • 1
  • Gultekin Goller
    • 1
    Email author
  • Jef Vleugels
    • 2
  • Kim Vanmeensel
    • 2
  1. 1.Metallurgical and Materials Engineering DepartmentIstanbul Technical UniversityMaslak, IstanbulTurkey
  2. 2.Department of Metallurgy and Materials EngineeringKatholieke Universiteit LeuvenLeuvenBelgium

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