Microstructure and properties of lightweight fibrous porous mullite ceramics prepared by vacuum squeeze moulding technique |
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| Affiliation: | 1. School of Civil Engineering, Beijing Jiaotong University, 100044 Beijing, China;2. Institute for Infrastructure Engineering, Western Sydney University, Penrith, NSW 2751, Australia;1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China;1. Research & Development Center of China Academy of Launch Vehicle Technology, Beijing 100076, China;2. School of Materials Science and Engineering, Key Lab of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China |
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| Abstract: | A novel fibrous porous mullite network with a quasi-layered microstructure was produced by a simple vacuum squeeze moulding technique. The effects of organic binder content, inorganic binder and adsorbent on the microstructure and the room-temperature thermal and mechanical properties of fibrous porous mullite ceramics were systematically investigated. An anisotropy microstructure without agglomeration and layering was achieved. The fibrous porous mullite ceramics reported in this study exhibited low density (0.40 g/cm3), low thermal conductivity (~0.095 W/(m K)), and high compressive strength (~2.1 MPa in the x/y direction). This study reports an optimal processing method for the production of fibrous porous ceramics, which have the potential for use as high-temperature thermal insulation material. |
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| Keywords: | B Fibers B Porosity C Mechanical properties C Thermal properties D Mullite |
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