Toward vacuum sintering of YAG transparent ceramic using divalent dopant as sintering aids: Investigation of microstructural evolution and optical property |
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| Affiliation: | 1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China;2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China;3. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronics Engineering, Jiangsu Normal University, Xuzhou 221116, PR China;4. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta 30332, USA;5. Guangdong Fenghua Advanced Technology Holding Co., Ltd, Zhaoqing 526020, PR China;1. Department of Materials and Processes, Rafael, Haifa 31021 Israel;2. Department of Materials Science and Engineering, Technion − Israel Institute of Technology, Haifa 32000 Israel, Israel;1. School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China;2. Key Laboratory of Transparent and Opto-functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China;3. Institute of Electrophysics, Ural branch of Russian Academy of Sciences, 106 Amundsena Street, Ekaterinburg 620016, Russia;4. School of Materials Science and Engineering, Qiqihar University, 42 Wenhua Street, Qiqihar 161006, China;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China;2. Shanghai Research Institute of Criminal Science and Technology, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai 200083, PR China;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Analysis and Testing Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. Institute of Electrophysics, Ural branch of Russian Academy of Sciences, 106 Amundsena Street, Ekaterinburg 620016, Russia;1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou 221116, China;3. College of Materials Science and Engineering, Nanjing Technological University, Nanjing 210009, China |
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| Abstract: | Transparent YAG ceramics were fabricated by solid state reaction sintering using divalent dopants (CaO and MgO) as sintering additives without TEOS doping, and the effects of divalent dopants on their microstructure evolution and optical properties were investigated. It was found that CaO was more effective with respect to inhibiting grain growth than MgO, but not as effective as MgO in promoting densification. Fully dense, transparent YAG ceramics with excellent optical qualities could be achieved by optimizing the doping concentrations of CaO and MgO; the transmittance at 1064 nm was as high as 84.5% for 3 mm thick sample at the molar ratio of Ca: Mg=1:4, after sintered at 1840 °C for 8 h in vacuum. |
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| Keywords: | Divalent dopants Densification YAG ceramics Microstructure Optical property |
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