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Journal articles
Single-step sintering of zirconia ceramics using hydroxide precursors and Spark Plasma Sintering below 400 °C
Abstract : The densification of zirconia at very low temperatures (<400 °C) requires enhanced synergy between thermodynamics and kinetics. This work demonstrates an efficient single step approach combining amorphous hydrated zirconia and Spark Plasma Sintering at 350 °C and 600 MPa. The resulting zirconia ceramics exhibit a cohesive nanostructure with small average grain sizes (20 nm) and a predominantly monoclinic structural polymorph confirmed by both X-ray scattering analyses and High Resolution Transmission Electronic Microscopy. Remarkable Vickers hardness of 3.8 GPa for high level of porosity (30%) is explained by the density and homogeneous distribution of grains boundaries and meso/microporosities.
Cited literature [41 references]
https://hal.archives-ouvertes.fr/hal-02125329
Contributor : Stéphane Toulin <>
Submitted on : Monday, May 13, 2019 - 5:52:38 PM
Last modification on : Thursday, July 9, 2020 - 4:34:02 PM
Contributor : Stéphane Toulin <>
Submitted on : Monday, May 13, 2019 - 5:52:38 PM
Last modification on : Thursday, July 9, 2020 - 4:34:02 PM
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