Structure of Liquid Pb-Bi Alloys by X-ray Diffraction(Physics)

概要

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X-ray diffraction measurements were made at temperatures about 50℃ above liquidus in the Pb-Bi system. Three partial structure factors S_<ij>(Q) were evaluated from the observed X-ray intensities assuming that each S_<ij>(Q) is independent on the relative abundance of the constituent elements in the alloys. The partial reduced distribution functions G_<ij>(r) were also calculated. The functions S_<ij>(Q) and G_<ij>(r) have maxima which lie between those of the pure elements. The radii of the first coordination sphere show a linear dependence on the concentration as expected from random distribution of the atoms in liquid Pb-Bi alloys. A comparison was made between the partial and total structure factors obtained in this work and those calculated from the hard sphere model. Adequate agreement was obtained on the first peak, but good agreement of the damping behaviour and phase was not necessarily found.
東北大学の論文