依据GB/T 15616-2008《金属及合金的电子探针定量分析方法》, 采用电子探针波谱仪对某W600硅钢中的硅含量进行了定量测定, 对影响其定量测定结果的不确定度分量进行了分析, 并对不确定度的各个分量进行了计算和合成, 最后给出了硅钢中硅含量测定结果的不确定度报告: 该硅钢中的硅含量(质量分数)为1.50%, 扩展不确定度U=0.20%, 取包含因子k=2。

According to GB/T 15616-2008 “Quantitative Method for Electron Probe Microanalysis of Metals and Alloys”, the quantitative results of Si content in some W600 silicon steel was measured by EPMA-WDS. The uncertainty components which might affect the measurement results were considered, calculated and synthesized. Finally the uncertainty result for the quantitative value of Si content in the silicon steel was got. The mass content of Si was 1.50%, and expanded uncertainty U=0.20% under the condition of coverage factor k=2.