用透射电子显微镜选区电子衍射法鉴定多元系合金薄晶体试样物相时,常常有几种相同时参加反射的复杂电子衍射谱。特别是对于那些微小颗粒析出相,分析时非常不方便。利用不同的衍射斑点成暗场像,可以很快的确定其中某一套衍射谱对应的形貌。以及可能所属的相。这使进一步确定其晶体结构比较容易进行。 When the phase of the thin samples of multi-alloyed alloys is identified by transmission electron microscopy and selected electron diffraction, there are often several complex electron diffraction spectra of the same reflectance. Especially for those small particles precipitated phase, the analysis is very inconvenient. The use of different diffraction spots into dark field images, one can quickly determine the shape of a set of diffraction spectra. As well as the likely belonging phase. This makes it easier to determine its crystal structure.