High optical quality Y2O3 transparent ceramics with fine grain size fabricated by low temperature air pre-sintering and post-HIP treatment

作者：Wang, Zhongying; Zhang, Le; Yang, Hao; Zhang, Jian^*; Wang, Lixi; Zhang, Qitu^*

来源：Ceramics International, 2016, 42(3): 4238-4245.

DOI：10.1016/j.ceramint.2015.11.099

• High optical quality
• Air pre-sintering
• Post-HIP treatment
• Fine microstructure

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 degrees 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 degrees C for 4 h in air and post-HIPed at 1600 degrees C for 3 h (the pressure of HIP 200 MPa), and it had fine microstructure and the average grain size was 0.96 In addition, the in-line transmittance of the ceramic reached 81.7% at 1064 nm (1 mm thickness). By this approach, the transparent Y203 ceramics with fine grain size ( < 1.6 mu m) were elaborated without any sintering aid.

• 出版日期2016-2-15
• 单位南京工业大学; 江苏师范大学