Title: Composition design and mechanical properties of mixed (Ce,Y)-TZP ceramics obtained from coated starting powders
Authors: Huang, Shuigen ×
Vleugels, Jef
Li, Lianfu
Van der Biest, Omer
Wang, Peiling #
Issue Date: Aug-2005
Publisher: Elsevier Science Publishers
Series Title: Journal of the European Ceramic Society vol:25 issue:13 pages:3109-3115
Abstract: The microstructure and mechanical properties of a selection of ceramics with compositions in the low ceria and yttria corner of the ZrO2-CeO2-Y2O3 system were investigated and evaluated. The calculated isothermal section of the ZrO2-CeO2-Y2O3 system at 1450 degrees C was used to define the CeO2 content range of interest resulting in an optimum amount of tetragonal ZrO2 phase for TZP ceramics with an overall yttria content of 2 and 1 mol%. Pure monoclinic ZrO2 starting powder was coated with the appropriate amount of yttria and ceria stabiliser by means of a suspension coating technique and pressureless sintered in air at 1450 degrees C. The indentation toughness and Vickers hardness were evaluated as a function of the sintering time, grain-size and stabiliser content. An excellent fracture toughness of 13-15 MPa m(1/2) was obtained for ZrO2 ceramics with 1 mol% Y2O3 + 4 mol% CeO2, sintered for 1-4h at 1450 degrees C. (c) 2004 Elsevier Ltd. All rights reserved.
ISSN: 0955-2219
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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