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本文研究了超细粉透射电子显微镜（ＴＥＭ）试样的几种不同制备方法及它们对粉末分散效果的影响，提出冷冻干燥粉末分散新方法，并将其应用于粉末试样的分散中。用这种方法，可在透射电镜下观察到分散效果良好的超细颗粒形貌。
In this paper, several different preparation methods of the ultrafine powder transmission electron microscopy (TEM) samples and their influence on the powder dispersion effect were studied. A new method of freeze-dried powder dispersion was proposed and applied to the dispersion of powder samples. In this way, ultrafine particles with good dispersion can be observed under transmission electron microscope.