Preparation of submicron boron carbide powder through gas-solid reaction method |
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| Affiliation: | 1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333000, China;2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China;1. Materials Engineering Department, Yasouj University, Yasouj, Iran;2. West Australian School of Mines, Curtin University, PO Box U1977, Perth, Western Australia, Australia;1. Nano Technology Inc., 289-20 Daehwa-dong, Daedeok-gu, Daejon 306-801, Republic of Korea;2. Department of Mechanical and Design Engineering, Hongik University, Sejong 339-701, Republic of Korea;3. Department of Polymer Materials, Jilin Institute of Chemical Technology, Jilin City 132022, People''s Republic of China;4. Department of Chemistry, Inha University, Nam-gu, Incheon 402-751, South Korea;1. State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;2. Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Department of Physics, Renmin University of China, Beijing 100872, China;3. Department of Inorganic Nonmetallic Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;4. School of Scientific Research & Development, Beijing University of Chemical Technology, Beijing 100029, China;5. Tianjin Nitride Advanced Materials Company, Tianjin 300303, China;1. College of Science, Sichuan Agricultural University, Ya’an 625014, PR China;2. Analytical & Testing Center, Sichuan University, Chengdu 610064, PR China |
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| Abstract: | Boron carbide submicron powder was synthesized with boron oxide and graphene as starting materials by gas-solid reaction method using two different apparatuses. The effects of calcination temperature and holding time, apparatus type and B2O3/C ratio of the starting materials on the phase composition and morphology of the synthesized powders were evaluated. A newly formed residual carbon morphology distinct from original graphene were present in samples synthesized at a higher B2O3/C ratio or temperature. The synthesis temperature of ～1500 °C was found to be more suitable to obtain boron carbide powder without the existence of residual carbon. The new type of apparatus enabled the synthesis of boron carbide phase at a relatively lower temperature, due to its more efficient use of B2O3 vapor. |
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| Keywords: | Boron carbide Gas-solid reaction Submicron particles |
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