Fabrication and characterization of highly transparent Er:Y2O3 ceramics with ZrO2 and La2O3 additives |
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| Affiliation: | 1. Engineering Ceramics Department, Korea Institute of Materials Science, 797 Changwondaero, Changwon, Gyeongnam 641-831, Republic of Korea;2. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for Green Preparation and Application of Functional Materials, School of Material Science and Engineering, Hubei University, 368 Youyi Avenue, Wuhan, Hubei 430062, China;1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China;2. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;1. Institute of Electrophysics UB RAS, Amundsen St. 106, Ekaterinburg 620016, Russia;2. Ural Federal University named after the first President of Russia B.N. Yeltsin, Mira St. 19, Ekaterinburg 620002, Russia;1. Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, China;2. University of Chinese Academy of Science, Beijing 100049, China;1. Laser Materials Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India;2. Synchrotron Utilization Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India;3. Homi Bhabha National Institute, BARC, Mumbai, India;1. Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, China;2. University of Chinese Academy of Science, Beijing 100049, China |
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| Abstract: | In this study, we report highly transparent Er:Y2O3 ceramics (0–10 at% Er) fabricated by a vacuum sintering method using compound sintering additives of ZrO2 and La2O3. The transmittance, microstructure, thermal conductivity and mechanical properties of the Er:Y2O3 ceramics were evaluated. The in-line transmittance of all of the Er:Y2O3 ceramics (1.2 mm thick) exceeds 83% at 1100 nm and 81% at 600 nm. With an increase in the Er doping concentration from 0 to 10 at%, the average grain size, microhardness and fracture toughness remain nearly unchanged, while the thermal conductivity decreases slightly from 5.55 to 4.89 W/m K. A nearly homogeneous doping level of the laser activator Er up to 10 at% in macro-and nanoscale was measured along the radial direction from the center to the edge of a disk specimen, which is the prominent advantage of polycrystalline over single-crystal materials. Based on the finding of excellent optical and mechanical properties, the compound sintering additives of ZrO2 and La2O3 are demonstrated to be effective for the fabrication of transparent Y2O3 ceramics. These results may provide a guideline for the application of transparent Er:Y2O3 laser ceramics. |
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| Keywords: | Transparent ceramics Compound sintering additive Thermal properties Mechanical properties |
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