玻璃分相粉末电镜法研究中的定量分析及计算机处理

Quantitative Analysis and Computer Processing for Study of Glass Phase Separation with Powdered Specimen in TEM Technique

本文详细讨论了利用粉末电镜法研究玻璃分相中第二相颗粒在母体相中的存在关系。对电镜所反映出的分相玻璃中第二相粒子的尺度、分布等进行了分析。利用统计的方法并考虑了玻璃分相中会出现大小不同的国球及椭球形颗粒,导出了适用于第二相颗粒为国球或椭球时通用的计算实际颗粒平均粒度、分布等的新定量公式。全部公式的处理现已编制了程序并在计算机上通过。实际玻璃分相的有关数据可直接利用电镜照片上测得的数值经由计算机处理而得到,使用较为方便。

In this study, the second phase droplets in glass phase separation have been determined byTEM technique in which powdered specimen is used. The dimension and size distribution of the newphase particles, on basis of the data measured from TEM micrographs, has been discussedquantitatively. According to the statistical method, the general expressions for determination of sizedistribution and mean radius of ellipsoidal or spheroidal particles in phase separated glass have beendeduced and programmed. It is easy to process the data from TEM micrograph by computer calcula-tion and the result is quite satisfactory.