Influence of powder physicochemical characteristics on microstructural and optical aspects of YAG and Er:YAG ceramics obtained by SPS |
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| Affiliation: | 1. Institut franco-allemand de recherches de Saint-Louis – ISL, 5 rue du Général Cassagnou, 68301 Saint-Louis Cedex, France;2. Laboratoire des Matériaux Céramiques et Procédés Associés – LMCPA, Université de Valenciennes et du Hainaut-Cambrésis, Pôle universitaire de Maubeuge, Boulevard Charles de Gaulle, 59600 Maubeuge, France;1. Université de Limoges, SPCTS, UMR CNRS 7315, F-87000 Limoges, France;2. LCTL, SPCTS, F-87000 Limoges, France;3. CILAS, F-45063 Orléans, France;4. Université Lyon 1, ILM, UMR CNRS 5306, F-69622 Villeurbanne, France;1. Transparent Ceramics Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China;2. The State Key Lab of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China;3. Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. National Inorganic Mass Spectroscopy 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;4. Shanghai Research Institute of Criminal Science and Technology, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai 200083, China;1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China;2. Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Qinhuangdao 066004, China;1. College of Physical Science and Technology, Sichuan University, Chengdu 610064, China;2. Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China;3. International Center for Material Physics, Chinese Academy of Sciences, Shenyang 110015, China;4. Southwest Institute of Technical Physics, Chengdu 610041, China;5. College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China |
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| Abstract: | The present work aims to establish a correlation between the characteristics of YAG and Er:YAG commercial powders produced by two different synthesis routes and sintered ceramic microstructures and their optical aspect by taking into account the influence of pressure applied during the Spark Plasma Sintering (SPS) process. Physical and chemical characteristics of the powders were compared using various techniques such as SEM, XRD, laser diffraction and chemical analyses. Their behaviours were evaluated through a rheological study, compressibility tests and dilatometry cycles using SPS. This paper pinpoints the most important powder features which influence the optical quality of YAG and Er:YAG ceramics. The optical quality is mainly affected by the porosity, related to powder characteristics that affect particle rearrangement, densification and grain growth. The applied pressure induces microstructural heterogeneities depending on the starting material used and resulting in core-shell aspects of sintered ceramics. |
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| Keywords: | SPS YAG ceramics Powder characteristics Microstructural properties Optical aspect |
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