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.
| Original language | English |
|---|---|
| Pages (from-to) | 871-882 |
| Number of pages | 12 |
| Journal | Journal of Composite Materials |
| Volume | 44 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 23 Apr 2010 |
Keywords
- Calcia-zirconia
- Carbon nanotubes
- Ceramic composites
- Hydroxyapatite
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Materials Chemistry