超微粒子由于其本身具有的特殊性能及其在新材料合成、催化和微波吸收等方面的重要应用,近年来在国内外越来越引起重视并开展了广泛研究。按照粒度,超微粒子大体可分为两类:粒度为微米级的粒子目前被称为微粉(微晶),一般使用超声雾化技术制备;为了区别于微粉,我们将粒度为1—100nm的超微粒子称为毫微粉或毫微粒子。由于其粒度比微粉更小,粒 Ultrafine particles have attracted more and more attention both at home and abroad due to their special properties and their important applications in the synthesis of new materials, catalysis and microwave absorption. In accordance with the particle size, ultrafine particles can be broadly divided into two categories: Particle size of micron-sized particles are currently known as micronized (microcrystalline), the general use of ultrasonic atomization technology; In order to distinguish from the micro-powder, we will have a particle size of 1-100nm super Particles are called nanoparticles or nanoparticles. Because of its smaller particle size than the fine powder