Synthesis of zirconia nanoparticles on carbon nanotubes and their potential for enhancing the fracture toughness of alumina ceramics
Article
Article Title | Synthesis of zirconia nanoparticles on carbon nanotubes and their potential for enhancing the fracture toughness of alumina ceramics |
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ERA Journal ID | 4883 |
Article Category | Article |
Authors | Zhu, Yue-Feng (Author), Shi, Lei (Author), Liang, Ji (Author), Hui, David (Author) and Lau, Kin-Tak (Author) |
Journal Title | Composites Part B: Engineering |
Journal Citation | 39 (7-8), pp. 1136-1141 |
Number of Pages | 6 |
Year | 2008 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 1359-8368 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesb.2008.03.006 |
Abstract | 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 °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. |
Keywords | alumina; carbon nanotube; zirconia; alumina ceramics; mechanical property; zirconia nanoparticles |
ANZSRC Field of Research 2020 | 401708. Tribology |
401807. Nanomaterials | |
401601. Ceramics | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Ministry of Education, China |
Tsinghua University, China | |
University of New Orleans, United States | |
Hong Kong Polytechnic University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0q75/synthesis-of-zirconia-nanoparticles-on-carbon-nanotubes-and-their-potential-for-enhancing-the-fracture-toughness-of-alumina-ceramics
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