Plasma Synthesis of Ceramics: Studies in Particle Nucleationand Growth

该项目对等离子体法制备适合陶瓷加工的微粉进行了实验和理论研究。研究了冷却速度和反应物浓度对颗粒成核和生长的影响。将使用一种特殊的仪器进行实验，其中几种物质是从气相中成核的。将进行在线颗粒大小和数密度测量。将开发基于离散的模型和矩模型来计算液体和固体颗粒的成核率。所提出的研究将促进等离子体反应器中粒子产生的理论，并且粉末质量随工艺参数的函数的预测可以用于优化其设计。

The proposed project compromises an experimental and theoretical study of the plasma preparation of fine powders suitable for the processing of ceramics. The effects of cooling rates and reactant concentrations on particle nucleation and growth will be investigated. A special apparatus will be used to conduct experiments in which several substances are nucleated from the gas phase. On-line particle size and number density measurements will be performed. Discrete-based models and moment models will be developed for the nucleation rate of liquid and solid particles. The proposed research will advance the theory of particle production in plasma reactors, and the predictions of powder quality as a function of the processing parameters can be used to optimize their design.