纳米级超细粉,无论是作为粉体材料,还是作为具有新型固态结构的纳米晶块状材料的基体,都有着十分重要的意义。本文结合实例,综合介绍纳米级超细粉的几种有效或有潜在可能的制备方法,其中包括近年来迅速发展的辐射分解法和超临界流体技术。 Nanometer-sized ultra-fine powder, whether as a powder material, or as a new solid state nanocrystalline bulk material matrix, has a very important significance. In this paper, several examples of effective or potential preparation methods for nano-sized ultrafine powders are introduced, including the rapid development of radiation decomposition and supercritical fluid technologies in recent years.