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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/1440

Title: Synthesis of zirconia-alumina and alumina-zirconia core-shell particles via a heterocoagulation mechanism
Authors: GEUZENS, Elke
VANHOYLAND, Geert
D'HAEN, Jan
MULLENS, Jules
Luyten, J.
VAN BAEL, Marlies
VAN DEN RUL, Heidi
Issue Date: 2006
Publisher: Elsevier
Citation: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 26(15). p. 3133-3138
Abstract: This study describes the synthesis of core–shell particles, consisting of a ZrO2 or Al2O3 submicron nucleus coated by a nanolayer of Al2O3 or ZrO2, respectively. The oxide layers around the cores are deposited via a heterocoagulation route, based on the attraction of oppositely charged core and shell particles. TEM micrographs clearly show a homogeneous Al2O3 shell (originating from boehmite or γ-Al2O3 particles) around the ZrO2 cores and in the other case, a ZrO2 layer (originating from hydrothermally prepared ZrO2) around the submicron Al2O3 cores. From PCS measurements, it can also be deduced that the cores are enwrapped by a shell and it is calculated that the thickness of the Al2O3 shell is about 30–35 nm and the ZrO2 layer is approximately 80 nm. The coated powders are additionally characterized by XRD.
URI: http://hdl.handle.net/1942/1440
DOI: 10.1016/j.jeurceramsoc.2005.08.015
ISI #: 000241086000011
ISSN: 0955-2219
Category: A1
Type: Journal Contribution
Validation: ecoom, 2007
Appears in Collections: Research publications

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