Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 26, Issue 15, Pages 3133-3138Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2005.08.015
Keywords
composites; electron microscopy; Al2O3; ZrO2; heterocoagulation; coated particles
Categories
Ask authors/readers for more resources
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 gamma-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. (c) 2005 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available