Title: Phase assembly and microstructure of CeO2-doped ZrO2 ceramics prepared by spark plasma sintering
Authors: Xu, Tao ×
Wang, Peiling
Fang, Pingan
Kan, Yanmei
Chen, Lidong
Vleugels, Jef
Van der Biest, Omer
Van Landuyt, Jef #
Issue Date: Oct-2005
Publisher: Elsevier Science Publishers
Series Title: Journal of the European Ceramic Society vol:25 issue:15 pages:3437-3442
Abstract: CeO2-doped ZrO2, (8 mol%) starting powder was sintered by means of spark plasma sintering (SPS) at 1300 degrees C without holding time. The stability of the tetragonal ZrO2 phase in the Ce-ZrO2 ceramic sintered under strongly reducing conditions was investigated. The SPS sample consisted of monoclinic and tetragonal ZrO2 phase, with a volume ratio of two to one, as well as a trace amount of a Zr-Ce-O cubic solid solution phase. In contrast, the same powder sintered by hot-pressing in nitrogen at 1300 and 1500 degrees C for 1h showed no tetragonal ZrO2. Microstructural observation of the SPS ceramic by SEM and TEM revealed grains with and without twins. The reason for the appearance of the tetragonal phase in the SPS sample sintered under strongly reducing conditions is discussed. (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 (-)
× corresponding author
# (joint) last author

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