| 流态化CVD制备超细Al_2O_3－SnO_2复合粒子过程模型研究 |
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| 引用本文： | 华彬,李春忠,成浩,胡黎明,李洪钟.流态化CVD制备超细Al_2O_3－SnO_2复合粒子过程模型研究[J].华东理工大学学报(自然科学版),1995(4). |
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| 作者姓名： | 华彬 李春忠 成浩 胡黎明 李洪钟 |
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| 作者单位： | 华东理工大学技术化学物理研究所，中国科学院化工冶金研究所 |
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| 摘 要： | 基于流态化ＣＶＤ制备超细复合粒子过程中的反应、成核、包敷、气流夹带，建立了流态化ＣＶＤ反应器中描述超细粒子的粒度、分布及成核包敷、成膜包敷的一维过程模型。针对ＳｎＣｌ＿４－Ｈ＿２Ｏ－Ｎ＿２体系包敷超细Ａｌ＿２Ｏ＿３粒子的过程，研究了反应器中ＳｎＯ＿２粒子的形成过程及操作参数对其在Ａｌ＿２Ｏ＿３粒子表面的淀积速率及形态的影响。结果表明，反应温度和ＳｎＣｌ＿４浓度升高，包敷速率加快，包敷形态变差；背景气氛粘度增大，包敷形态变优，包敷速率减小；操作气速增大，包敷速率加快，包敷形态变优。
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| 关 键 词： | 模型 超细粒子 化学气相淀积 包敷 |
Modelling Study of Al_2O_3-SnO_2 Ultrafine Particle Composite Synthesis Process by Fluidiziation Chemical Vapor Deposition |
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| Hua Bin,Li Chunzhong,Cheng Hao and Hu Liming.Modelling Study of Al_2O_3-SnO_2 Ultrafine Particle Composite Synthesis Process by Fluidiziation Chemical Vapor Deposition[J].Journal of East China University of Science and Technology,1995(4). |
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| Authors: | Hua Bin Li Chunzhong Cheng Hao and Hu Liming |
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| Abstract: | Based on the chemical reation,nucleation,coating and gas entraning in the flu-idization chemical vapor deposition reactor,one dimentional process model of particle size,film coating and nucleation coating was established.To the SnCl_4-H_2O-N_2 system,coating rate and morphology of SnO_2 with operating parameters were studied.The results showed that the coating rate increased with increasing reation temperature and SnCl_4 flux,but the coating morphology got worse with the gas viscosity increasing,the coating rate decreased but the coating morphology got better. |
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| Keywords: | modelling ultrafine partcles chemical vapor deposition coating |
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