Abstract
Nanocrystalline aluminum nitride powders obtained from gas condensation and in situ nitridation in a forced-flow reactor have been sintered successfully without pressure or additives. The resulting densified pellets showed good thermal conductivity and low oxygen content. A comparison of the improvement in densification with micrometer-size and nanocrystalline yttria additives was undertaken and it was found that the nanocrystalline yttria decreased the sintering temperature significantly. Besides spherical nanoparticles, needle-shaped nanocrystalline aluminum nitride particles that resulted in highly textured compacts when hot pressed could also be produced.
| Original language | English |
|---|---|
| Pages (from-to) | 1121-1127 |
| Number of pages | 7 |
| Journal | Journal of the American Ceramic Society |
| Volume | 86 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2003 |
| Externally published | Yes |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry