Mechanism of superior charge suppression behavior of Si3N4 ceramics at solid-gas interface |
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| Affiliation: | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China;2. State Grid Smart Grid Research Institute Co. Ltd., Beijing, 102211, China;3. Sinoma Jiangxi Electric Porcelain Electrical Co., Ltd., Pingxiang, 337000, China;1. Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing, 100083, China;2. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, China;3. Shandong aofu Environmental Protection Technology Limited Company, Dezhou, 251599, China;1. School of Materials Science and Engineering, South China University of Technology, Guangzhou, China;2. National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China;3. Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China;1. State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei, 430200, China;2. School of Textile Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China;1. Department of Science and Humanities, Sri Krishna College of Engineering and Technology, Coimbatore, 641008, Tamilnadu, India;2. Department of Physics, KPR Institute of Engineering and Technology, Coimbatore, 641407, Tamilnadu, India;3. Physics Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia;1. School of Physical Science and Technology, Yangzhou University, Yangzhou, 225002, PR China;2. Guangling College, Yangzhou University, Yangzhou, 225000, PR China;3. Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, 225002, PR China;1. Southern Federal University, Research Institute of Physics, Rostov-on-Don, Russia;2. Kh. Ibragimov Complex Institute of the Russian Academy of Sciences (CI RAS), Grozny, Russia;3. Southern Federal University, Faculty of Physics, Rostov-on-Don, Russia;4. Southern Federal University, Institute of Nanotechnologies, Electronics and Equipment Engineering, Taganrog, Russian Federation;5. Southern Federal University, Institute of High Technology and Piezo Technic, Rostov-on-Don, Russia;6. Chechen State University A.A. Kadyrov, Institute of Mathematics, Physics and Information Technology, Grozny, Russia;7. Chechen State University, Department of Applied Physics, Grozny, Russia |
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| Abstract: | Recent study has found excellent bulk and surface insulation property of Si3N4 ceramic which make it potential to serve as key insulation component in various energy transmission apparatus. Charge accumulation at gas-solid interface is a critical insulation property but few relevant study on Si3N4 can be found. This contribution has investigated the surface charge property of Si3N4 ceramic compared to traditional insulation polymer under different electrical-thermal stress. Through its comparison with the electric field distribution, the main source of the surface charge accumulation is analyzed, indicating that the superior surface charge suppression performance of Si3N4 lies on its low carrier density and conduction barrier, which considerably prevent charge injection and suppress the normal electric field which drives the charge to the gas-solid interface. The proposed mechanism is also validated by the characterization on conducting and space charge property for Si3N4 as well as dynamic simulation on surface charge accumulation. |
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| Keywords: | Gas-solid interface Surface charge accumulation Charge injection Dynamic charge simulation |
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