Fabrication of Highly Transparent Y2O3 Ceramics with CaO as Sintering Aid

Danlei Yin; Jun Wang; Meng Ni; Peng Liu; Zhili Dong; Dingyuan Tang

doi:10.3390/ma14020444

Fabrication of Highly Transparent Y₂O₃ Ceramics with CaO as Sintering Aid

Materials (Basel). 2021 Jan 18;14(2):444. doi: 10.3390/ma14020444.

Authors

Danlei Yin^{1

2}, Jun Wang^{1

2}, Meng Ni^{2

3}, Peng Liu¹, Zhili Dong³, Dingyuan Tang²

Affiliations

¹ Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
² School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
³ School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.

Abstract

Highly transparent Y₂O₃ ceramics were successfully fabricated with CaO as sintering aid. The microstructure evolution, optical transmittance, hardness and thermal conductivity of the Y₂O₃ ceramics were investigated. It was found that doping a small amount (0.01-0.15 wt.%) of CaO could greatly improve the densification rate of Y₂O₃. With an optimized CaO dosage of 0.02 wt.% combined with the low temperature vacuum sintering plus hot isostatic pressing (HIP-ing), Y₂O₃ ceramics with in-line transmittance of 84.87% at 1200 nm and 81.4% at 600 nm were obtained.

Keywords: sintering aids; transparent ceramics; yttrium oxide.

Abstract

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