Processing of low-density alumina foam |
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| Authors: | Prasanta Jana V. Ganesan |
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| Affiliation: | 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China;2. Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, P.R. China;3. Qingdao Collaborative Innovation Center of Marine Science and Technology, Ocean University of China, Qingdao 266100, P.R. China;1. School of Materials Science and Engineering, Jiangsu Key Lab for Advanced Metallic Materials, Southeast University, 211189 Nanjing, China;2. School of Biological Science and Medical Engineering, Southeast University, 210096 Nanjing, China;1. Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China;2. Mechanical Engineering Institute, Nanjing Institute of Technology, Nanjing, 211167, China;3. Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi''an, 710072, Shaanxi, China;1. Otto-von-Guericke-University Magdeburg, Chemical Institute – Industrial Chemistry, Universitätsplatz 2, 39106, Magdeburg, Germany;2. Otto-von-Guericke-University Magdeburg, Institute for Materials and Joining Technology – Nonmetallic Materials, Große Steinernetischstraße 6, 39104, Magdeburg, Germany;1. Dongnam Division, Korea Institute of Industrial Technology, Busan 46938, South Korea;2. Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea;3. Department of Polymer Science and Engineering, School of Applied Chemical Engineering, Polymeric Nano-materials Laboratory, Kyungpook National University, Daegu 41566, South Korea;4. Institute for Translational Research in Dentistry, Kyungpook National University, Daegu 41940, South Korea |
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| Abstract: | A novel method for synthesizing low-density alumina foam has been developed. The alumina foam with 98.5% porosity was synthesized by an unconventional route from an aqueous aluminum nitrate–sucrose solution. The resin formed by heating this solution underwent foaming and set into solid green foam, which was sintered at 1873 K. The thermogram of the green foam showed mass loss in four stages. The foam exhibited interconnected porous network with window size in the range 103–226 and 167–311 μm for foams sintered at 1223 and 1873 K, respectively. The alumina foam sintered at 1223 K exhibited gamma phase and that sintered at 1873 K exhibited alpha phase. |
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