Microstructure evolution during hydrogen pre-sintering of (Tb0.7Lu0.3)2O3 transparent ceramics

Yu Xin; Tao Xu; Yaozhi Wang; Peng Luo; Wenhai Zhao; Kang Bin; Jing Wei; Mei Bingchu

doi:10.1117/12.2656548

16 December 2022 Microstructure evolution during hydrogen pre-sintering of (Tb_0.7Lu_0.3)₂O₃ transparent ceramics

Yu Xin, Tao Xu, Yaozhi Wang, Peng Luo, Wenhai Zhao, Kang Bin, Jing Wei, Mei Bingchu

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 1250116 (2022) https://doi.org/10.1117/12.2656548
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

(Tb_0.7Lu_0.3)₂O₃ transparent ceramics were prepared by hydrogen pre-sintering and hot isostatic pressing treatment. ZrO₂ was added as sintering aid to restrain the abnormal grain growth. The microstructure evolution and linear shrinkage changes of the (Tb_0.7Lu_0.3)₂O₃ transparent ceramics in the range of 1400℃~1700℃ were investigated. It can be seen from the results that the linear shrinkage of ceramics increased nonlinearly with the increase of the sintering temperature. In the range of 1550℃~1600℃, the (Tb_0.7Lu_0.3)₂O₃ ceramics had a higher shrinkage rate. And the shrinkage rate slowed down when the temperature exceeded 1600℃. The samples prepared by 1550℃ hydrogen pre-sintering combined with 1550℃ hot isostatic pressing sintering showed good optical property. The average grain size was about 1.69μm and the highest transmittance reached 74.81% @1064 nm.

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Yu Xin, Tao Xu, Yaozhi Wang, Peng Luo, Wenhai Zhao, Kang Bin, Jing Wei, and Mei Bingchu "Microstructure evolution during hydrogen pre-sintering of (Tb_0.7Lu_0.3)₂O₃ transparent ceramics", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 1250116 (16 December 2022); https://doi.org/10.1117/12.2656548

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