Novel Baddeleyite-Based Zirconia Ceramics for Biomedical Applications

Abstract:

For the first time nanostructured engineering ceramics were prepared from natural zirconia mineral (baddeleyite) with CaO as a tetragonal phase stabilizer. The effect of synthesis conditions on microstructure and mechanical properties of the baddeleyite-based ceramics is reported, furthermore, the effect of calcia content on hardness and fracture toughness is studied. Optimal calcia concentration and synthesis conditions are found, corresponding hardness and fracture toughness values are 10,8 GPa and 13,3 MPa×m^1/2. The reported mechanical properties are comparable to those typically reported for yttria-stabilized engineering zirconia ceramics, prepared from chemically synthesized zirconia.

• Periodical: Nano Hybrids and Composites (Volume 13)
• Pages: 9-14
• DOI: https://doi.org/10.4028/www.scientific.net/NHC.13.9
• Online since: January 2017
• Authors: Alexander I. Tyurin*, Andrey O. Zhigachev, Alexey V. Umrikhin, Vyacheslav V. Rodaev, Tatyana S. Pirozhkova
• Keywords: Baddeleyite, Fracture Toughness, Hardness, Phase Composition, TZP Nanostructured Ceramics

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