Abstract
High optical quality Y2O3 transparent ceramics with fine grain size were successfully fabricated by air pre-sintering at various temperature ranging from 1500 to 1600 °C combined with a post-hot-isostatic pressing (HIP) treatment using co-precipitated powders as the starting material. The fully dense Y2O3 transparent ceramic with highest transparency was obtained by pre-sintered at 1550 °C for 4 h in air and post-HIPed at 1600 °C for 3 h (the pressure of HIP 200 MPa), and it had fine microstructure and the average grain size was 0.96 μm. In addition, the in-line transmittance of the ceramic reached 81.7% at 1064 nm (1 mm thickness). By this approach, the transparent Y2O3 ceramics with fine grain size (<1.6 μm) were elaborated without any sintering aid.
Original language | English |
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Pages (from-to) | 4238-4245 |
Number of pages | 8 |
Journal | Ceramics International |
Volume | 42 |
Issue number | 3 |
DOIs | |
State | Published - 15 Feb 2016 |
Keywords
- Air pre-sintering
- Fine microstructure
- High optical quality
- Post-HIP treatment