METHOD FOR MEASURING THE DENSITY OF PRECIPITATE PARTICLES IN A METAL COMPOSED OF COPPER, IRON, COBALT OR NICKEL

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the density of precipitate particles capable of precisely measuring the particle density by easily measuring the surface density of precipitates and thickness of a sample while reducing a problem of counting loss in surface density measurement of precipitates.SOLUTION: The thickness of a sample is obtained by X-ray absorption difference method from the intensity ratio of a K-lay of a characteristic X-lay and an L-lay of a characteristic X-lay different from each other, which are emitted when irradiating with an electron ray a base material sample of a metal of copper, iron, cobalt or nickel. The areal density of the precipitate is measured from the characteristic X-ray image obtained by mapping characteristic X-rays to precipitates in the sample. From the thickness of these samples and the areal density of the precipitates, the particle density of the precipitates in the sample is calculated.SELECTED DRAWING: Figure 1