Skip to Main content Skip to Navigation
Journal articles

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

Abstract : 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
Document type :
Journal articles
Complete list of metadata
Contributor : Open Archive Toulouse Archive Ouverte (OATAO) Connect in order to contact the contributor
Submitted on : Friday, May 23, 2014 - 8:39:10 AM
Last modification on : Wednesday, June 1, 2022 - 4:18:55 AM

Links full text




Christophe Laurent, Abel Rousset, Pierre Bonnefond, Djar Oquab, Bruno Lavelle. Mechanical properties of alumina-metal-zirconia nano-micro hybrid composites. Journal of the European Ceramic Society, Elsevier, 1996, vol. 16, pp. 937-943. ⟨10.1016/0955-2219(96)00008-8⟩. ⟨hal-00995272⟩



Record views