Aerosol Reactors for Ceramic Powder Synthesis

本研究是一项实验与理论相结合的研究 气溶胶反应器用于合成高质量的陶瓷粉末 应用. 要研究的粉末是氮化硅， 各种金属氧化物。 所产生的粉末的尺寸分布将 作为气体成分、温度、停留时间 时间和其他相关变量。 粉末将被表征为 化学成分和结晶度 光谱学和X射线衍射。 粉末的适用性 将在一项正在进行的研究中对陶瓷应用进行评估， 另一个机构。 反应堆将被建模， 颗粒成核，通过冷凝和凝聚的颗粒生长， 以及烧结引起的骨料形状变化。 气溶胶反应器提供了令人兴奋的生产粉末的方法， 用于陶瓷、光学、电气或 催化应用。 这项研究应该有助于设计和 优化这些反应堆。

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.