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Journal of Advanced Ceramics 2022, 11(6): 901-911 https://doi.org/10.1007/s40145-022-0584-4
Research Article | Open Access | Issue | Published: 11 May 2022

Optical, thermal, and mechanical properties of (Y1-xScx)2O3 transparent ceramics

Show Author's Information Changliang YANGa,b,  Jiquan HUANGa,b,c( ),  Qiufeng HUANGb,  Zhonghua DENGb,c,  Yun WANGa,b,  Xiaoyun LIa,b,  Zehua ZHOUa,b,  Jian CHENb,c,  Zhuguang LIUb,c,  Wang GUOb,c( )
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350117, China
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
Keywords:
thermal conductivity, mechanical properties, Y2O3, Sc2O3, solid solution transparent ceramics
Cite this article:
YANG C, HUANG J, HUANG Q, et al. Optical, thermal, and mechanical properties of (Y1-xScx)2O3 transparent ceramics. Journal of Advanced Ceramics, 2022, 11(6): 901-911. https://doi.org/10.1007/s40145-022-0584-4
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Abstract Full text Electronic supplementary material About this article

Sesquioxides such as Y2O3 and Sc2O3 are important optical materials, but the fabrication of their transparent ceramics remains a challenge due to the ultra-high melting point of over 2400 ℃. In this work, a series of (Y1-xScx)2O3 transparent ceramics were successfully fabricated by a simple vacuum sintering process without any sintering additives, and the effect of scandium (Sc) content (x) on the crystal structure and optical/thermal/mechanical properties was evaluated. Y2O3 and Sc2O3 form a complete solid solution with a cubic bixbyite structure. The formation of (Y1-xScx)2O3 solid solution promotes the densification of ceramics, leading to the realization of high transparency close to the theoretical transmittance over a wide wavelength range of 0.35-8 µm. In particular, the in-line transmittance in the range of 0.6-6 µm remains above 80% for (Y1-xScx)2O3 with x = 0.23-0.31, while the pristine Y2O3 and Sc2O3 are opaque. Moreover, the mechanical properties including Vickers hardness (HV), fracture toughness (KIC), and biaxial flexural strength (δb) are evidently enhanced due to the solid solution strengthening, while the thermal conductivity (k) is reduced due to the reduction of photon free path. This study demonstrates that forming of solid solution is a facile and universal approach for preparing sesquioxide transparent ceramics with high optical and mechanical quality.


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About this article

Optical, thermal, and mechanical properties of (Y1-xScx)2O3 transparent ceramics

Show Author's information Changliang YANGa,b, Jiquan HUANGa,b,c( ), Qiufeng HUANGb, Zhonghua DENGb,c, Yun WANGa,b, Xiaoyun LIa,b, Zehua ZHOUa,b, Jian CHENb,c, Zhuguang LIUb,c, Wang GUOb,c( )
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350117, China
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China

Abstract

Sesquioxides such as Y2O3 and Sc2O3 are important optical materials, but the fabrication of their transparent ceramics remains a challenge due to the ultra-high melting point of over 2400 ℃. In this work, a series of (Y1-xScx)2O3 transparent ceramics were successfully fabricated by a simple vacuum sintering process without any sintering additives, and the effect of scandium (Sc) content (x) on the crystal structure and optical/thermal/mechanical properties was evaluated. Y2O3 and Sc2O3 form a complete solid solution with a cubic bixbyite structure. The formation of (Y1-xScx)2O3 solid solution promotes the densification of ceramics, leading to the realization of high transparency close to the theoretical transmittance over a wide wavelength range of 0.35-8 µm. In particular, the in-line transmittance in the range of 0.6-6 µm remains above 80% for (Y1-xScx)2O3 with x = 0.23-0.31, while the pristine Y2O3 and Sc2O3 are opaque. Moreover, the mechanical properties including Vickers hardness (HV), fracture toughness (KIC), and biaxial flexural strength (δb) are evidently enhanced due to the solid solution strengthening, while the thermal conductivity (k) is reduced due to the reduction of photon free path. This study demonstrates that forming of solid solution is a facile and universal approach for preparing sesquioxide transparent ceramics with high optical and mechanical quality.

Keywords: thermal conductivity, mechanical properties, Y2O3, Sc2O3, solid solution transparent ceramics

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Received: 25 November 2021
Revised: 23 February 2022
Accepted: 27 February 2022
Published: 11 May 2022
Issue date: June 2022

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© The Author(s) 2022.

Acknowledgements

This research was supported by Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China (2021ZZ113) and Strategic Priority Research Program of the Chinese Academy of Sciences (XDA22010301)

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