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Microstructure Evolution in Samples Prepared by Filter Pressing and Sintering of Zirconia Nanopowder

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Abstract:

The aim of this work was the investigation of microstructure evolution during sintering of zirconia nanopowder. The powder containing 97 mol. % ZrO2 and 3 mol. %Y2O3, with particle size about 8 nm was prepared by the hydrothermal method. The flocculated and dispersed water suspensions of the powder were filter pressed under 5 MPa, which led to green bodies of relative density about 40%. Samples prepared from the suspensions showed distinct differences in densification behaviour. The observation of the microstructure evolution (i.e. density, fracture surface) in samples heat-treated at different temperatures, and detailed analysis of open porosity evolution were performed.

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Periodical:

Advances in Science and Technology (Volume 45)

Pages:

572-577

DOI:

https://doi.org/10.4028/www.scientific.net/AST.45.572

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Online since:

October 2006

Authors:

Łukasz Zych, Krzysztof Haberko

Keywords:

Ceramic Nanopowders, Filter Pressing, Suspension, Zirconia

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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