微波强化喷雾闪速热解制备ITO粉体基础研究

项目名称： 微波强化喷雾闪速热解制备ITO粉体基础研究

项目编号： No.51264015

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 郭胜惠

作者单位： 昆明理工大学

项目金额： 48万元

中文摘要： 单分散、高纯度的铟锡氧化物（ITO）粉末是制备高性能靶材的关键和必要环节，目前仅通过气、固或液相通过纯金属进行制备。项目拟利用微波外场的直接加热和对化学反应的特殊效应，将定向净化和配置的铟、锡氯化物前驱体直接在微波作用下闪速热解制备铟锡氧化物粉体材料。着重研究微波作用下铟、锡氯化物前驱体闪速热解直接获得ITO氧化物的反应过程机制和调控方法，深层次揭示动态条件下，流化-微波复合场的喷雾速率、空间分布和微波能量的耦合关联关系，最终形成液-固相流化复合场中微波促进液滴干燥脱水-分解收缩-粉体成型过程的反应机理，得到前驱体在外场作用下的传热-传质规律，揭示微波能量内部驱动下颗粒热解的反应机制，获得高质量的ITO粉体和新技术原型。项目有力的深化微波加热技术基础理论，革新传统喷雾热解技术，更为短流程冶金材料一体化技术开辟了绿色途径，立足于地区优势开发高端产品和技术，具有重要的研究价值和应用前景。

中文关键词： 微波；喷雾热解；铟锡氧化物；超细粉体；

英文摘要： Mono-disperse and high purity indium tin oxide (ITO) powder is the key links to the preparation of high performance targets, nowadays, it is only prepared from pure metal through the gas, solid or liquid phase. Project aims to use direct heating characteristics of microwave field and special effects on chemical reactions, to prepare indium-tin oxide powder material from precursors of directed purification and configuration of indium and tin chlorides by flash pyrolysis under microwave radiation. The project is focused on reaction mechanism and control method of getting ITO oxide from indium, tin chloride precursor using flash pyrolysis under microwave radiation; revealing relationship between spray rate of fluidized-microwave composite field, space distribution and microwave energies coupling under dynamic conditions; eventually forming reaction mechanism of microwave-promoted droplet drying and dehydration in liquid-solid flow complex field - decomposition contraction- powder formation; obtaining heat transfer and mass transfer law of precursors under external field, revealing reaction mechanisms of particles pyrolysis driven by microwave energy, obtaining high quality ITO powder and new technological prototypes. The project will strongly deepen the basic theory of microwave heating technology; revolutionizing

英文关键词： Microwave；Spray Pyrolysis；Indium Tin Oxide；ultrafine powder；