Dispersion Mechanism of Superfine SiC Particles in the Different Condition Liquid |
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| Authors: | Jie-Guang Song Gang-Chang Ji Shi-Bin Li Lian-Meng Zhang |
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| Institution: | 1. College of Materials Science and Engineering, Jiujiang University , Jiujiang, China;2. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan, China songjieguang@yahoo.com.cn;4. College of Materials Science and Engineering, Jiujiang University , Jiujiang, China;5. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan, China |
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| Abstract: | SiC@A1(OH)3-Y(OH)3 core-shell composite particles are synthesized by co-precipitation method for strengthening the antioxidation of SiC at high temperature. To reach better A1(OH)3-Y(OH)3 composite shell and higher coating ratio on the SiC particles surfaces, SiC particles must be adequately dispersed in the SiC suspension during the coating process. The dispersion mechanism of SiC particles is investigated by the sedimentation method. Through test and analysis, the optimum conditions of the dispersion of SiC particles in the SiC suspension are sedimentating for 10 minutes, ultrasonic dispersion for 10 minutes, the lower SiC concentration, pH = 9, the dispersant content for the 2% volume of SiC suspension and using the polyelectrolyte dispersant, respectively. |
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| Keywords: | Dispersion condition dispersion mechanism sedimentation method SiC particles |
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