Optimization of particle size,dispersity, and conductivity of 8 mol% Y2O3 doped tetragonal zirconia polycrystalline nanopowder prepared by modified sol-gel method via activated carbon absorption |
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| Affiliation: | 1. School of Metallurgy, Northeastern University, Shenyang 110819, PR China;2. State key laboratory of rolling and automation, Northeastern University, Shenyang 110819, PR China;1. Guangxi Key Laboratory of Processing for Non–ferrous Metal and Featured Materials, Guangxi University, Nanning 530004, China;2. School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China;3. Centre of Excellence for Advanced Materials, Dongguan, China;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;3. Institute of Physics of the Czech Academy of Sciences, 16200, Prague, Czech Republic;4. King Mongkut''s University of Technology Thonburi, Bangkok 10140, Thailand;1. Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, PR China;2. Key Laboratory of High Performance Ceramic Fibers (Xiamen University), Ministry of Education, Xiamen, PR China;1. Department of Materials Engineering, Ben-Gurion University of the Negev, P.O.B 653, Beer-Sheva 8410501, Israel;2. Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O.B 653, Beer-Sheva 8410501, Israel;3. Ilse Katz institute for Nanoscale science and Technology, Ben-Gurion University of the Negev, P.O.B 653, Beer-Sheva 8410501, Israel;4. DDR&D IMOD, Hakirya, Tel Aviv 61909, Israel |
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| Abstract: | 8 mol% Y2O3 doped tetragonal zirconia polycrystalline (8Y-TZP) ceramic nanopowders were synthesized via a novel modified sol-gel method employing zirconium carbonate basic as zirconium resources. The activated carbon as a dispersant was added to the precursor solution during the formation of the sol. The phase behavior, thermal decomposition, microstructure morphology, and electrochemical performance of nanopowders with the addition of activated carbons were investigated by X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM), particles size distribution, and electrochemical impedance spectroscopy analysis (EIS). After adding the activated carbon, the average crystallite size of 8Y-TZP nanopowders decreased from about 53.16–33.51 nm when calcined at 900 ℃, and the 8Y-TZP nanopowders were produced loosely agglomerated. Meanwhile, compacts prepared by pressing the as-obtained 8Y-TZP nanopowders sintered to 98.8% relative density at 1600 ℃ and exhibited an average grain size of 0.89 µm, which brought a positive effect on ionic conductivity (0.079 S·cm?1). |
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| Keywords: | Nanopowders Modified sol-gel method Activated carbon Dispersant |
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