Abstract： The particle size of spherical glass beads was measured by micro image method. The uncertainty influencing the particle size measuring results was analyzed from the aspects of repeatability of experiment and the particle size measurement by internal standard method. Each uncertainty component was calculated and synthesized, and the uncertainty report for particle size measurement was given lastly. The results show that the expanded uncertainty for particle size analysis is 5.3% by SEM in 200 times magnification by internal standard method, and the effective degree of freedom is 96.

Keywords: micro image method; uncertainty; particle size

中图分类号：O242       文献标志码：A

文章编号：1008-5548(2015)03-0073-03

DOI:10.13732/j.issn.1008-5548.2015.03.017

收稿日期：2015-01-16， 修回日期：2015-02-17，在线出版时间：2015-06-24。

第一作者简介：郝玉红（1980—），女, 硕士，工程师，研究方向为材料测试分析。 E-mail:haoyh@simt.com.cn。