CNTs/Si3N4 Composites Fabricated by Reaction Bonded Processing
| Periodical | Key Engineering Materials (Volumes 336 - 338) |
|---|---|
| Main Theme | High-Performance Ceramics IV |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 1277-1279 |
| DOI | 10.4028/www.scientific.net/KEM.336-338.1277 |
| Citation | Zhi Yong Huang et al., 2007, Key Engineering Materials, 336-338, 1277 |
| Online since | April, 2007 |
| Authors | Zhi Yong Huang, Xue Jian Liu, Xing Wei Sun, Li Ping Huang |
| Keywords | Carbon Nanotube (CNT), Ceramic Matrix Composite (CMC), Microstructure, Property Analysis |
| Price | US$ 28,- |
The CNTs/Si3N4 ceramic matrix composites were prepared by the reaction bonded processing. The phase compositions, chemical compatibility, mechanical properties, and microwave attenuation properties of the composites were investigated. XRD analysis shows the composites consist mainly of the α- and β-Si3N4, with a trace of unreacted silicon. The SEM micrograph displays the fractured surface of the composites studs with intact CNTs, indicating that CNTs and Si3N4 are chemically compatible. The composites with 1.0wt.% CNTs have a strength of 280 MPa, hardness of 8.2 GPa and toughness of 2.3 MPa·m0.5. The average value of the transmission attenuation reaches 6 dB at X band, indicating the composites have a potential for application in electromagnetic adsorbing or shielding.
