Study On Microstructures At Nano Scale Of TiO₂ Nanocrystalline, PAN Preoxidized Fibers Prepared With Radio Frequency Plasma

Nano materials and microstructures of materials at nano scales are two key regions on the study of material science. The structures of nano materials are closely related to the preparation conditions, and characterization is the unique way to accurately judge how the preparation conditions affect the structures. The microstructures of materials should be characterized using varied means, in different angles and multiple scales. The characterization meanes should also be accurate, convenient and effective. At the mean time, only the identical characterization results for the same structure feature using different means that can guide experiments and provide scientific basis for the new preparation techniques.Plasma system can make the reactions happen under conditions of fastness, purity and high activity. The roles of plasma playing on material preparation are: one is for the preparing of nano materials, the other one is for the increasing microcrystalline structure ordering of the prepared materials.The maximum characteristic of radio frequency plasma is that there is no electric pole in the discharge space, so it is in nonexistence of dissipation...