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Pore Removal During Final Stage Sintering of Modified Yttria

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Science of Sintering

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Abstract

Starting with a relative density of about 95%, the final stage sintering of Y2O3 doped with 30 mol% Gd2O3 is investigated in a temperature range from 1700℃ to 1900℃. The microstructural evolution is characterized by grain size, bulk porosity, interpore spacing, and pore size distribution. The pore removal is found to be grain boundary controlled by enhanced, but normal grain growth. Due to pore entrapment within grains, the densification stagnates before complete pore elimination is achieved. In an intermediate stage of this process, grain growth driven pore coalescence increases the size of pores located at the grain boundaries.

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Author information

Authors and Affiliations

  1. Corporate Research and Development, Siemens AG, Munich, Germany

    W. Rossner

Authors
  1. W. Rossner
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Editor information

Editors and Affiliations

  1. Serbian Academy of Sciences and Arts, Belgrade, Yugoslavia

    Dragan P. Uskoković

  2. North Carolina State University, Raleigh, North Carolina, USA

    Hayne Palmour III

  3. Alfred University, Alfred, New York, USA

    Richard M. Spriggs

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© 1989 Springer Science+Business Media New York

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Rossner, W. (1989). Pore Removal During Final Stage Sintering of Modified Yttria. In: Uskoković, D.P., Palmour, H., Spriggs, R.M. (eds) Science of Sintering. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0933-6_34

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  • DOI: https://doi.org/10.1007/978-1-4899-0933-6_34

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4899-0935-0

  • Online ISBN: 978-1-4899-0933-6

  • eBook Packages: Springer Book Archive

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