Effect of sintering temperature on the characteristics of ceramic hollow spheres produced by sacrificial template technique |
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| Affiliation: | 1. State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China;2. Institute of technical information for building materials industry, Beijing 100084, PR China;1. High Temperature Ceramics Institute, Henan Key Laboratory of High Temperature Functional Ceramics, Zhengzhou University, Zhengzhou, 450052 China;2. College of Materials Science and Engineering, Henan University of Technology, Zhengzhou, 450007 China;1. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China;2. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-2, O-Okayama, Meguro-ku, Tokyo 152-8550, Japan;3. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China;1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, China;2. State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China |
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| Abstract: | Ceramic hollow spheres were produced by a sacrificial template technique with subsequent sintering under temperatures ranging from 1100 °C to 1250 °C. The effect of the sintering temperature on the structure of the ceramic hollow spheres was investigated by optical and scanning electron microscopy, and a gas adsorption method. The results show that the structure of the ceramic hollow spheres can be controlled, with the retention of the hollow spherical shape, by variation of the sintering temperature. Increase of the sintering temperature from 1100 °C to 1250 °C decreased the outer diameter of the ceramic hollow spheres by 14 percent, the shell thickness by 18 percent, and the void area ratio of the shell surface by 9.2 times; both of the specific surface area and the total pore volume of ceramic hollow spheres decreased by 60 percent. |
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| Keywords: | Ceramic hollow spheres Sintering temperature Sacrificial template technique |
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