Powder Synthesis: Precipitation

This lecture covers the synthesis of powders through precipitation methods, including the Acheson method for SiC synthesis. It discusses solid-vapor reactions, nucleation, crystal growth, and aggregation processes, as well as the thermodynamics of precipitation reactions. Various techniques such as sol-gel methods, hydrothermal synthesis, and spray pyrolysis are explored, along with scaling-up strategies. The importance of particle size, reactive gas pressures, and impurities in the synthesis process is highlighted.