Facile preparation of morph-genetic SiC/C porous ceramic at low temperature by processed bio-template |
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| Affiliation: | 1. State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai 200237, PR China;2. Shanghai Engineering Research Center of Space Engine, Shanghai Institute of Space Propulsion, Shanghai 201112, PR China;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. Korea Institute of Materials Science, Changwon, Gyeongnam, 51508, Republic of Korea;1. School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, 610031, People''s Republic of China;2. National Demonstration Center for Experimental Physics Education (Southwest Jiaotong University), Chengdu, 610031, People''s Republic of China;3. School of Electrical Engineer, Southwest Jiongtong University, Chengdu, 610031, People''s Republic of China;4. Superconductivity and New Energy R & D Center, Southwest Jiaotong University, 610031, People''s Republic of China;5. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, People''s Republic of China;1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China;2. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China |
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| Abstract: | A porous morph-genetic SiC/C ceramic material was fabricated using biomass-derived C template, Si powder, and Fe(NO3)3·9H2O as the starting materials. The effects of heating temperature, and catalyst/Si mole ratio on the formation of SiC/C ceramic were investigated. In addition, the pore size distribution was obtained through pore size analysis, and the determination of oxidation resistance of SiC/C ceramics and C template was carried out by thermogravimetric analysis. The results show that copious amounts of SiC nanowires, which were distributed on the surfaces and interiors of the C template holes, were formed at 1300 °C with 4 wt% Fe as catalyst. The SiC nanowires significantly affected the oxidation resistance and microporous structures of the prepared materials. Moreover, a possible formation mechanism for the porous SiC/C ceramic was determined. |
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| Keywords: | C template Porous biomass-derived ceramic Catalyst SiC nanowires |
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