Microstructures and properties of solid-state-sintered silicon carbide membrane supports |
| |
| Affiliation: | 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China;3. Suzhou Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Suzhou, 215411, China;1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Department of Chemistry, Shanghai University, Shanghai 200444, China;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Engineering Ceramics Research Department, Korea Institute of Materials Sciences, Changwon, Gyeongnam, Republic of Korea;3. University of the Chinese Academy of Sciences, Beijing, China;1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China;3. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China;1. REQUIMTE-LAQV, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal;2. Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal;3. LiqTech International A/S, DK-2750, Ballerup, Denmark;4. Laboratorio de Fotoelectrones de Rayos X, SCAI, Universidad de Málaga, E-29071 Málaga, Spain;5. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain;6. Departamento de Física Aplicada I, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain;1. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China;2. Nanjing Industrial Technology Research Institute of Membrane Material Co., Ltd., No.1 Yuansi Road, Nanjing 211800, China;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. Engineering Ceramic Research Group, Korea Institute of Materials Science, Changwon, Gyeongnam 51508, Republic of Korea;3. Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry, Jiangsu Collaborative Innovation Center for Rock Salt and Concave Soil Resources Deep Utilization, Huaiyin Institute of Technology, Huaian, 223003, China |
| |
| Abstract: | Porous solid-state-sintered SiC (S–SiC) membrane supports were successfully fabricated by pressureless sintering at 2150 °C in argon, using fine and coarse graded SiC powders as the main starting material. There were uniformly distributed and fully interconnected pores in as-acquired S–SiC membrane supports, accompanied with similar apparent porosities for all of them. When increasing the size of coarse SiC powder, their average pore sizes were distinctly enlarged from ∼1.6 μm to ∼2.3 μm, which significantly enhanced their nitrogen permeability from 0.9 × 10−13 m2 to 2.6 × 10−13 m2. Moreover, S–SiC membrane supports possessed outstanding flexure strengths of 134.1 ± 21.3 MPa at room temperature and 88.7 ± 8.4 MPa at 1000 °C owing to strong interface bonding between SiC grains. Compared with the traditional SiO2 -bonded and mullite-bonded SiC supports, S–SiC membrane supports presented their great superiority in high-temperature flexure strength as well as acid and alkali corrosion resistance, which permitted them to be potentially applied in high-temperature and strongly corrosive environments. |
| |
| Keywords: | Silicon carbide Membrane supports Solid-state-sintered Corrosion High temperature |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
