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Mechanical properties of alumina-metal-zirconia nano-micro hybrid composites

Laurent, Christophe and Rousset, Abel and Bonnefond, Pierre and Oquab, Djar and Lavelle, Bruno Mechanical properties of alumina-metal-zirconia nano-micro hybrid composites. (1996) Journal of the European Ceramic Society, 16 (9). 937-943. ISSN 0955-2219

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Official URL: https://doi.org/10.1016/0955-2219(96)00008-8


Al2O3 and Al2O3-2 wt% Fe0.8Cr0.2 nanocomposite powders were wet-mixed with different ZrO2 or Y-ZrO2 powders. The influence of the ball-milling medium and mixing duration on the microstructure and the amount of tetragonal zirconia retained after hot-pressing are discussed. The fracture strength and fracture toughness of the alumina-metal-zirconia specimens ave lower than that of the alumina-metal and alumina-zirconia composites. This could result from a partial annihilation of the different reinfor cement mechanisms involved and also from interactions between zirconia and the metallic phase. There is no correlation between the mechanical properties and the amount of tetragonal zirconia. However, the amount of tetragonal to monoclinic transformation at the surface of the specimens during grinding prior to the mechanical tests seems to be a key parameter

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of the European Ceramic Society website : http://dx.doi.org/10.1016/0955-2219(96)00008-8
HAL Id:hal-00995272
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:17 Apr 2014 10:47

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