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通过大量的实验论证,确立了运用图像分析仪进行 UO2芯块气孔分布的自动测量方法,建立了完善的 UO2 芯块金相样品制备方法。对于 UO2芯块气孔分布测量,采用了多个物镜的组合测量法,使方法的有效测量范围达到 0～100 μm。重点论证了图像仪测量过程中各条件参数的设置方法,分析了各主要误差来源及误差计算方法。得出 UO2芯块气孔分布测量总相对误差优于 10%。
Through a large number of experimental demonstration, the automatic measurement method of stomatal distribution of UO2 pellet by image analyzer was established, and the preparation method of metallographic sample of UO2 pellet was established. For the measurement of stomatal distribution of UO2 pellets, the combined measurement method of multiple objective lenses is adopted to make the effective measuring range of the method reach 0-100 μm. Emphatically demonstrated the setting method of each condition parameter in the measuring process of imager, analyzed the main sources of error and the calculation method of error. It is concluded that the total relative error of the stomatal distribution of UO2 pellets is better than 10%.