Simple Non-Destructive Analysis of Metals by Fluorescent X-Ray Spectroscopy

概要

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Non-destructive fluorescent X-ray spectroscopic analyses of metals were investigated with only one or two compensative reference standards. Three theoretical equations for the analysis were derived. In the first equation (cf. Eq. 8) only one reference standard containing the same component as in the sample is used. However, this equation is based on the assumption that all elements in the alloy must have similar absorption effects to the measuring spectral lines and therefore, can only be used for special alloys, for example, Sn-Sb or Fe-Co alloys. The second and the third equation (cf. Eq. (16), (21) ) are in need of two reference standard samples. In the former, one pure metal and one reference standard sample, and in the latter, two reference samples containing the same elements as in the sample to be analysed are used. These two equations are superior to the first one in applying to binary alloys and practical samples. Hence, with these equations the compositions of alloys were estimated by using niether calibration curve nor absorption parameter.
東北大学の論文