Fabrication and Characterization of HA-ZrO2-MWCNT Ceramic Composites

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...

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Published in:Journal of composite materials 2010-04, Vol.44 (7), p.871-882
Main Authors: Meng, Y.H., Tang, C.Y., Tsui, C.P., Uskokovic, P.S.
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Language:English
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container_issue 7
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container_title Journal of composite materials
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creator Meng, Y.H.
Tang, C.Y.
Tsui, C.P.
Uskokovic, P.S.
description 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.
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title Fabrication and Characterization of HA-ZrO2-MWCNT Ceramic Composites
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