In situ study on microwave sintering of ZTA ceramic: Effect of ZrO2 content on densification, hardness, and toughness - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of the American Ceramic Society Année : 2017

In situ study on microwave sintering of ZTA ceramic: Effect of ZrO2 content on densification, hardness, and toughness

Résumé

Better understanding of the effect of multimode-microwave sintering of zirconia-toughened alumina (ZTA) was investigated. A comparative dilatometric analysis was conducted between conventional and microwave heating processes, to clarify the influence of zirconia on the densification of ZTA under electromagnetic field. The thermal gradient on sample measurements indicates the change to the microwave volumetric heating is improved by zirconia which adsorbs microwave energy better, thus acting as a susceptor. The most beneficial effect on microstructure, toughness, and hardness were observed at the optimal zirconia content of 10 vol%. The results with both microwave and conventional sintering illustrate the strengthening effect on the composite by zirconia. Of special interest, multimode microwave sintering creates a finer homogeneous microstructure, with resulting hardness and toughening comparable to those obtained for conventional sintering, as well as improved densification, and at lower cost.

Domaines

Matériaux
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Dates et versions

emse-01578603 , version 1 (27-08-2021)

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Christophe Meunier, Fei Zuo, Nathalie Peillon, Sébastien Saunier, Sylvain Marinel, et al.. In situ study on microwave sintering of ZTA ceramic: Effect of ZrO2 content on densification, hardness, and toughness. Journal of the American Ceramic Society, 2017, 100 (3), pp.929-936. ⟨10.1111/jace.14658⟩. ⟨emse-01578603⟩
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