Interaction between the
components in the {Zr, Hf}-Ag-Sn ternary systems
Chem.
Met. Alloys 4 (2011) 234-242
https://doi.org/10.30970/cma4.0197
N.
MELNYCHENKO-KOBLYUK, V.V. ROMAKA, L. ROMAKA,
Yu. STADNYK
The phase equilibria in the Zr–Ag–Sn and
Hf–Ag–Sn ternary systems at 770 K and 870 K, respectively, were
studied by means of X-ray diffraction and metallographic analysis over the
whole concentration range. At the temperatures of the investigations the
presence of ternary phases was observed neither in the Zr–Ag–Sn, nor in the
Hf–Ag–Sn system. Significant solid solutions based on
the Zr5Sn4 and Hf5Sn4 binaries (Ti5Ga4
type, space group P63/mcm) were found in both the
investigated systems. The limiting compositions of the solid solutions
(Zr5AgSn3 and Hf5AgSn3) are
considered as compounds with Hf5CuSn3 structure type. The
regions of existence and the cell parameters of the Zr5AgxSn4-x and Hf5AgxSn4-x (x = 0.0-1.0) solid solutions were determined using EMPA and
X-ray powder diffraction.
Isothermal section of the phase diagram of the
Hf–Ag–Sn system at 870 K.
Keywords
Stannides / Phase diagrams
/ Solid solution / X-ray diffraction / EPMA