Abstract
Nanocrystalline γ-alumina powders of 50-nm size were milled by high-energy ball milling. It was found that the pure γ-alumina phase showed great stability and did not transform to any other phase even after a long milling time. On the other hand, γ-alumina, which contained a small amount of the α7-alumina phase, showed a gradual phase transformation from γ- to α-alumina on milling. The phase transformation mechanism during milling appears to be nucleation and growth type and promoted by the α-alumina seed.
| Original language | English |
|---|---|
| Pages (from-to) | 780-783 |
| Number of pages | 4 |
| Journal | Journal of the American Ceramic Society |
| Volume | 88 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2005 |
| Externally published | Yes |