Abstract
On the basis of a critical assessment, the Ce-Mg-Y system has been investigated, employing X-ray diffraction (XRD), optical microscopy, and microprobe analyses. Phase relations have been determined in the complete isothermal section at 500 °C, revealing the existence of two novel ternary compounds: Ce1−x Y x Mg5−y (0.39 ≤ x ≤ 0.84; 0 ≤ y ≤ 0.60) with the GdMg5, or the defect Sm11Cd45-type and the cubic Laves phase Ce1−x Y x Mg2 (x ≈ 0.67). The binary system Ce-Y has been reinvestigated, and a constitutional diagram, temperature vs concentration, has been proposed. In contrast to earlier versions, the so-called δ phase with the αSm-type has been shown to be metastable.
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Flandorfer, H., Giovannini, M., Saccone, A. et al. The Ce-Mg-Y system. Metall Mater Trans A 28, 265–276 (1997). https://doi.org/10.1007/s11661-997-0129-z
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DOI: https://doi.org/10.1007/s11661-997-0129-z