Abstract
Alumina/carbon nanotube (CNT) composites with different CNT contents were fabricated by hot-pressing to investigate the effect of CNT additions on the microstructure and mechanical properties of the composites. Alumina/CNT powders were obtained by forming the CNTs with the aid of catalyst particles supported on the alumina particles. The CNT contents were varied from 0 to 12.5 wt.% by changing the content of the iron nitrate catalyst precursor. The relative densities and the matrix grain size decreased with increasing CNT content. Hardness reached a maximum with about 4 wt.% added CNT. The effect of CNT additions on microhardness was explained by the matrix microstructure and reinforcement effect of CNT.
| Original language | English |
|---|---|
| Pages (from-to) | 201-204 |
| Number of pages | 4 |
| Journal | Journal of Ceramic Processing Research |
| Volume | 3 |
| Issue number | 3 PART 2 |
| Publication status | Published - 2002 |
Keywords
- Alumina/CNT composite
- Carbon nanotube (CNT)
- Microstructure
ASJC Scopus subject areas
- Ceramics and Composites