Tetragonal-to-Monoclinic Transformation Influence on the Mechanical Properties of CeO2- ZrO2 Ceramics

Maria do Carmo de Andrade Nono

doi:10.4028/www.scientific.net/MSF.498-499.506

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HomeMaterials Science ForumMaterials Science Forum Vols. 498-499Tetragonal-to-Monoclinic Transformation Influence...

Tetragonal-to-Monoclinic Transformation Influence on the Mechanical Properties of CeO₂- ZrO₂ Ceramics

Abstract:

CeO2- ZrO2 ceramics are considered a candidate material for applications as structural high performance ceramics. In this work are presented and discussed the tetragonal-to-monoclinic stress-induced transformation influence on the mechanical properties in these ceramics. Sintered ceramics were fabricated from powders mixtures containing ZrO2 and 8 to 14 CeO2 % mol. SEM observations were used to study de ceramic microstructures and X-rays diffraction to identification and determination of tetragonal and monoclinic phases. It was adopted the 4-point bending tests, Vickers surface hardness and fracture toughness technique to the determination of the mechanical parameters. The results showed that the mechanical properties were strongly dependent of the CeO2 content, the microstructure and the fraction of tetragonal-to-monoclinic stress-induced transformation.

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Materials Science Forum (Volumes 498-499)

Pages:

506-511

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.498-499.506

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Online since:

November 2005

Authors:

Maria do Carmo de Andrade Nono

Keywords:

CeO₂- ZrO₂ Ceramics, Ce-TZP Ceramics, Mechanical Property, Tetragonal-to-Monoclinic Stress-Induced Transformation

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