Effects of Container Materials on X-ray Fluorescence Spectra and Detection Time for In-situ X-ray Fluorescence Composition Analysis of Liquid Metals

DOI:10.15011//jasma.35.350403
Int. J. Microgravity Sci. Appl. 2018p350403
論文著者
M SHIINOKI, Y. ANDO1, H. FUKUDA, S. SUZUKI and T. MASAKI
所属組織
Faculty of Science and Engineering, Waseda University, Department of Applied Mechanics and Aerospace Engineering and Kagami Memorial Research Institute of Materials Science and Technology, Waseda University, Department of Materials Science and Engineering, Shibaura Institute of Technology
要約
The X-ray fluorescence spectra of a liquid metal were analyzed using an X-ray fluorescence analysis, and the effects of the container materials on the peak intensities of a liquid metal using an X-ray fluorescence analysis were experimentally clarified. The spectrum of a liquid metal (Sn57Bi43) at 443 K with a container material (graphite or quartz) was measured using an X-ray fluorescence analysis. As a result of the experiments, sharp peaks of Sn and Bi were observed with each container material, and the Compton scattering peak from the X-ray tube was detected using graphite. In addition, by combining the Lambert-Beer law with the model used in the experiments, a theoretical formula was derived. Because the derived formula agreed well with a determination coefficient of 0.979 or higher, the validity of this formula was confirmed. The variation coefficient, which indicates the reproducibility, of an X-ray fluorescence analysis using the container materials was 2.3% for quartz (thickness of 0.3 mm) and 2.1% for graphite (thickness of 2.0 mm) at a detection time of 180 s. Moreover, to obtain the reproducibility, the detection time should be set to longer than 300 s (graphite) and 480 s (quartz), which are comparable to the times required by inductively coupled plasma-optical emission spectrometry.
Keyword(s)
Liquid metal, X-ray analysis, In-situ observation, Real-time analysis.
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Received 6 August 2018, accepted 22 October 2018, published 31 October 2018

© The Japan Society of Microgravity Applicaiton

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