Abstract
Abstract The phase relations in the ternary system Yb–Zn–In have been established for the partial isothermal section in the 0–33.3 at.% ytterbium concentration range at 400 °C, by researching of more than forty alloys. X-ray powder diffraction (XRPD), optical microscopy (OM) and scanning electron microscopy (SEM), complemented with energy dispersive X-ray spectroscopy (EDS), were used to study the microstructures, identify the phases and characterize their crystal structures and compositions. The phase equilibria of this Yb–Zn–In partial section at 400 °C are characterized by the presence of three extended homogeneity ranges, indium solubility in Yb 13 Zn 58 and YbZn 2 and of zinc solubility in YbIn 2 , and the existence of one ternary intermetallic compound, YbZn 1− x In 1+ x , x = ∼0.3. This new compound crystallizes in the UHg 2 structure type (space group P6/mmm ), with a = 4.7933(5) A, c = 3.6954(5) A. The studied partial isothermal section has eight ternary phase fields at 400 °C.
Published Version
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