Abstract
Fine-grained transparent alumina ceramics were successfully prepared by the spark plasma sintering technique at 1 350 °C for 5 min dwelling time without any sintering aids. Effects of pre-load pressure on microstructure and transparency were investigated systematically. For a low pre-load pressure, 10 MPa, with normal characteristic fast heating rate (100 °C/min), high in-line transmission of 56% at 640 nm and 84% at 2 000 nm can be reached, further increase of pre-load pressure leads to decrease in transmittance.
| Original language | English |
|---|---|
| Pages (from-to) | 1127-1130 |
| Number of pages | 4 |
| Journal | Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society |
| Volume | 38 |
| Issue number | 6 |
| State | Published - Jun 2010 |
Keywords
- Alumina
- Pre-load pressure
- Spark plasma sintering
- Transparency
