Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31979
Title: Fabrication and characterization of HA-ZrO2-MWCNT ceramic composites
Authors: Meng, YH
Tang, CY 
Tsui, CP 
Uskokovic, PS
Keywords: Calcia-zirconia
Carbon nanotubes
Ceramic composites
Hydroxyapatite
Issue Date: 2010
Publisher: Sage Publications Ltd
Source: Journal of composite materials, 2010, v. 44, no. 7, p. 871-882 How to cite?
Journal: Journal of Composite Materials 
Abstract: In this article, a new kind of hydroxyapatite-zirconia-carbon nanotube (HA-ZrO2-MWCNT) ceramic composites was fabricated to enhance the mechanical properties of a hydroxyapatite (HA) ceramic for satisfying various requirements in bone rehabilitation. A new dispersing process was proposed to ensure a homogeneous distribution of multi-wall carbon nanotubes (MWCNTs) in the HA ceramic matrix. The flexural strength and fracture toughness of the HAZrO2-CNT composites were enhanced by about 126% and 124%, respectively, as compared with those of the unmodified HA ceramics. The X-ay diffraction analysis revealed that a small quantity of HA decomposed in the composites with introduction of strengthening phases. The in vitro test results showed that the sample surfaces were covered with a new apatite layer after immersion in simulated body fluid for 10 days, indicating good biocompatibility of the composites.
URI: http://hdl.handle.net/10397/31979
DOI: 10.1177/0021998309349552
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