Document Type
Article
Publication Date
1-1-2012
Abstract
Previous studies have shown that the addition of SiC nanoparticles to Al2O3 changes the fracture mode from intergranular to transgranular and in doing so improves the wear resistance. The reason for this is not clear but a change to the grain boundary chemistry caused by impurities such as C added with the SiC may be involved. The aim of the current study was to investigate the influence of small amounts of C doping on the fracture mode and wear properties of Al2O3. The microstructure and properties of Al2O3 doped with 0 and 0.012 wt C were studied. Al2O3 showed mainly intergranular fracture. The addition of 0.012 wt C to Al2O3 changed the fracture mode to mainly transgranular. The wear resistance improved and the percentage of surface grains pulled out was lower compared to pure Al2O3. (C) 2012 Elsevier Ltd. All rights reserved.
Keywords
Al2O3 Al2O3/C Fracture mode Abrasive wear Wear resistance Pullout alumina/silicon carbide nanocomposites alumina microstructure behavior silicon ceramics carbon
Divisions
ConservativeDentistry
Publication Title
Journal of the European Ceramic Society
Volume
32
Issue
16
Additional Information
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