Abstract
Stabilization of θ{symbol}-alumina phase by silica was studied in nanocomposite (diphasic) alumina-silica gels by XRD and BET surface areas measurements. Five wt.% of silica (22 nm particles) increased the crystallization temperature of θ{symbol} to α-alumina by about 100°C from boehmite (10 nm particles) derived alumina. Stabilization of θ{symbol}-alumina was caused by the formation of intimate contact (Al-O-Si) between components by diffusion of silica into the defect alumina structure.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 131-134 |
| Number of pages | 4 |
| Journal | Journal of Porous Materials |
| Volume | 2 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jun 1995 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering