Preparation and properties of LiF transparent ceramics by cold sintering process |
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| Affiliation: | 1. Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang, Liaoning Province, 110819, China;2. School of Metallurgy, Northeastern University, Shenyang, Liaoning, Province, 110819, China;1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China;2. Laboratory for High Performance Transparent Protective Materials of Jiangsu Province, Jiangsu Tiemao Glass Co., Ltd., Nantong, 226600, PR China;1. College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061, China;2. State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266061, China;3. School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China;4. State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;1. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;2. Hubei Longzhong Laboratory, Xiangyang 441000, Hubei, China;1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang, Liaoning, 110819, China;2. Research Center for Advanced Ceramic Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, China;3. School of Mechanical Engineering, Shenyang University, Shenyang, 110044, China;4. Foshan Graduate School of Northeastern University, Foshan, 528311, Guangdong, China |
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| Abstract: | The development of optoelectronic devices depends on the development of optoelectronic materials such as transparent ceramics. LiF transparent ceramics are photoelectronic ceramics with excellent photoelectric properties. Still, the traditional preparation of LiF transparent ceramics generally needs a high temperature or high-pressure environment, and the cost is high. This paper adopts a cold sintering process to prepare high-density LiF transparent ceramics at low temperatures to reduce the preparation conditions. The effects of different cold sintering temperatures on microstructure, density, hardness, visible and near-infrared transmittance, and electrical properties of transparent ceramics were studied. The results show that using LiOH solution as the solvent, the relative density of LiF ceramics can reach up to 99.64% under the sintering condition of 375 °C/470 MPa, and the Vickers hardness is 1.34 GPa. Vickers hardness is 1.34 GPa. The transmittance in the visible and near-infrared regions is 60.45% and 85.31%, respectively. The dielectric constant and dielectric loss of 13 GHz are 4.36 and 1.11 × 10?3, respectively. |
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| Keywords: | LiF Transparent ceramics Cold sintering process Photoelectric performance |
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