Фазовая диаграмма системы Ce-Eu

К оглавлению: Другие диаграммы (Others phase diargams)


Ce-Eu (Cerium-Europium) K.A. Gschneidner, Jr. and F.W. Calderwood [67Sav] assumed that bcc Eu and bcc dCe form a continuous series of solid solutions at high temperatures. However, the evaluators believe that divalent Eu and trivalent Ce form immiscible liquids, as do divalent Yb with trivalent Lu and divalent Ca with trivalent Ce and La and propose an alternative diagram. Lattice spacings for a few Ce-rich alloys in the Ce-Eu system were reported by [63Ara], who found that Eu forms a solid solution with Ce up to 4.6 at.% Eu. Because their lattice spacing value for Ce is smaller than the accepted value listed in [Gschneidner], an adjustment has been made that indicates only about 4.4 at.% Eu dissolves in gCe. The proposed solubility of Ce in (Eu) is not shown in the assessed diagram. 63Ara: S. Arajs, H. Chessin, R.V. Colvin, and G.R. Dunmyre, J. Appl. Phys., 34, 1668 (1963). 67Sav: E.M. Savitskii, V.F. Terekhova, and R.S. Torchinova, Metalloved. Term. Obrab. Metal., (2), 25 (1967); TR: Met. Sci. Heat Treat., (1/2), 100 (1967). Published in Bull. Alloy Phase Diagrams, 3(2), Sep 1982. Complete evaluation contains 2 figures, 1 table, and 7 references. 1