Journal
COMPOSITES PART B-ENGINEERING
Volume 39, Issue 7-8, Pages 1136-1141Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2008.03.006
Keywords
zirconia; carbon nanotube; alumina; mechanical property
Funding
- Foundation of National Natural Science, PR China [10332020]
- Innovation Fund for Outstanding Scholar of Henan Province, PR China [0521001000]
Ask authors/readers for more resources
Nanoparticles of zirconia (ZrO2) were in situ synthesized on the surface of carbon nanotubes by means of liquid phase reactions and a proper heat treatment process. The size of the nanoparticles could be controlled by the amount of zirconium source materials in a solution and its reaction times. In this study, the size of the nanoparticles ranged from several nanometers to twenty nanometers. It was particularly noted that the synthesized zirconia possessed a cubic structure (c-phase) which generally existed as a stable form of zirconia crystals at high temperatures (above 2370 degrees C) as well as a form of zirconia that could be used for enhancing the fracture toughness of alumina ceramics. Experimental results showed that the mechanical properties of alumina ceramics mixed with in situ synthesized nanoparticles on the surface of carbon nanotubes were much better than that of pristine nanotubes or zirconia nanoparticles alone. The existence of the nanoparticles on the surface of nanotubes results in improving the dispersion and bonding properties of the nanotubes in alumina matrix environment. The fracture toughness of CNT/ ZrO2 alumina ceramics was also improved by the mechanism of bridging effect. (c) 2008 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