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Sinterable Yttria-Doped Zirconia Powders Chemically Coprecipitated in Non-Aqueous Medium

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Tailoring Multiphase and Composite Ceramics

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Abstract

Yttria-doped zirconia powders were synthesized by coprecipitation, by mixing an alcoholic solution of ZrCl4 and YCl3. 6H2O with an alcoholic solution of NaOH. The purified powders were characterized for physical and chemical properties, pressing behavior and sinterability. The powders are ultrafine, highly pure and presumably chemically homogeneous but strongly agglomerated. TZP (Toughened Zirconia Polycrystals) were pressureless sintered from powders calcined at around 700°C and fired densities around 95–99% were obtained with the appropriate processing. Very uniform microstructures were observed in the sintered samples, with most of the grains in the submicron range. For a 4 w/o Y2O3 composition (2.2 m/o) flexural strengths as high as 1157 MPa (3 point) and fracture toughness values (microindentation method) of 5–6 MPa·m1/2 were measured.

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References

  1. H. K. Bowen and coworkers. (Ceramic Processing Research Laboratory, M.I.T. Dept. of Materials Science and Engineering, Cambridge, MA 01239.)

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Authors and Affiliations

  1. Norton Company High Performance Ceramics, 1 New Bond Street, Worcester, Massachusetts, 01606, USA

    Giulio A. Rossi

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  1. Giulio A. Rossi
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Editors and Affiliations

  1. The Pennsylvania State University, University Park, Pennsylvania, USA

    Richard E. Tressler , Gary L. Messing , Carlo G. Pantano  & Robert E. Newnham , ,  & 

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© 1986 Plenum Press, New York

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Rossi, G.A. (1986). Sinterable Yttria-Doped Zirconia Powders Chemically Coprecipitated in Non-Aqueous Medium. In: Tressler, R.E., Messing, G.L., Pantano, C.G., Newnham, R.E. (eds) Tailoring Multiphase and Composite Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2233-7_5

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  • DOI: https://doi.org/10.1007/978-1-4613-2233-7_5

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4612-9309-5

  • Online ISBN: 978-1-4613-2233-7

  • eBook Packages: Springer Book Archive

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