Combustion Nitridation Processing in Aerosol Flow Reactors

气溶胶流反应器中的燃烧氮化处理

• 批准号: 9803539
• 负责人: Alan Weimer
• 金额: $ 34万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9803539&HistoricalAwards=false
• 关键词: Combustion; Nitridation; Processing; Aerosol; Flow

Abstract 9803539 A. Weimer, University of Colorado at Boulder The objective is to develop a model for exothermically reacting aerosol particle generation mechanisms (coagulation, coalescence, and deposition) with application to combustion nitridation synthesis of fine ceramic particles, and to validate the obtained model with data from ceramic particle formation experiments. An aerosol reactor shaped as a tube will be constructed with capabilities to measure temperature and wall deposition along the tube. The P.I. will collaborate in modeling with Prof. S. Pratsinis (University of Cincinnati). Several ideas are advanced for generation of ceramic composite particles and redirection of thermophoretic deposition from the reactor wall. It is expected that an improved model for particle growth and structure, and a reduction of wall deposition in manufacturing of advanced ceramic powders by exothermic processing The research has relevance to high temperature synthesis of nonoxide ceramic material in aerosol flow reactors. ***

摘要9803539美国科罗拉多大学博尔德分校A·韦默的目标是建立一个用于细陶瓷颗粒燃烧氮化合成的放热反应气溶胶颗粒生成机制(凝聚、聚结和沉积)的模型，并用陶瓷颗粒形成实验数据验证所获得的模型。将建造一个管状的气溶胶反应器，具有测量管内温度和壁面沉积的能力。P.I.将与S.Pratsinis教授(辛辛那提大学)合作进行建模。对陶瓷复合颗粒的生成和反应器壁面热泳沉积的重新定向提出了几点看法。该研究对气溶胶流动反应器中非氧化物陶瓷材料的高温合成具有一定的指导意义。***