Aerosol Reactors for Ceramic Powder Synthesis

用于陶瓷粉末合成的气溶胶反应器

• 批准号: 8813006
• 负责人: Richard Flagan
• 金额: $ 24.66万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8813006&HistoricalAwards=false
• 关键词: Aerosol; Reactors; Ceramic; Powder; Synthesis

This research is a combined experimental and theoretical investigation of aerosol reactors for synthesis of high quality powders for ceramic applications. The powders to be studied are silicon nitride and various metal oxides. Size distributions of the powders produced will be measured as a function of gas composition, temperature, residence time, and other relevant variables. Powders will be characterized as to chemical composition and crystallinity by atomic absorption spectroscopy and X-ray diffraction. The suitability of the powders for ceramic application will be evaluated in an ongoing study at another institution. The reactor will be modeled accounting for particle nucleation, particle growth by condensation and coagulation, and aggregate shape change by sintering. Aerosol reactors offer exciting processes for producing powders of unique properties for use in ceramic, optical, electrical, or catalytic applications. This research should help in the design and optimization of such reactors.

这项研究是对气溶胶反应器的实验和理论相结合的研究，用于合成陶瓷应用的高质量粉末。 要研究的粉末是氮化硅和各种金属氧化物。 所生产粉末的尺寸分布将作为气体成分、温度、停留时间和其他相关变量的函数来测量。 将通过原子吸收光谱和 X 射线衍射来表征粉末的化学成分和结晶度。 另一家机构正在进行的研究将评估粉末对于陶瓷应用的适用性。 反应器的建模将考虑颗粒成核、冷凝和凝结引起的颗粒生长以及烧结引起的聚集体形状变化。 气溶胶反应器提供了令人兴奋的工艺来生产具有独特性能的粉末，用于陶瓷、光学、电气或催化应用。 这项研究应该有助于此类反应器的设计和优化。