Abstract
The 873 K isothermal section of La–Ni–Cr ternary system phase diagram was investigated by X-ray powder diffraction, differential thermal analysis and electron microscopy techniques. It is composed of 10 single-phase regions, 17 two-phase regions and 8 three-phase regions. At 873 K, the existence of ternary compounds has not been observed in this isothermal section. The maximum solid solubility of Ni in Cr is about 3 at.% Ni, and of Cr in Ni, LaNi 5, La 2Ni 7, LaNi 3, La 2Ni 3, LaNi, La 7Ni 3, is about 35, 20, 15, 8, 9, 9 and 6 at.% Cr, respectively. A solid solubility of Cr in the La 7Ni 16 phase has not been observed.
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