Isothermal section of the Tb–Cu–Sn
system at 670 K
Chem.
Met. Alloys 14 (2021)
48-57
https://doi.org/10.30970/cma14.0420
Lyubov ROMAKA, Vitaliy ROMAKA,
Mariya KONYK, Yuriy STADNYK
The phase relations
in the ternary system Tb-Cu-Sn have been studied at 670 K over the whole
concentration range by X-ray powder diffraction and energy-dispersive
X-ray spectroscopy. The phase equilibria at 670 K are characterized by
the formation of five ternary compounds: TbCuSn (LiGaGe-type, space group P63mc, a = 0.4517(2), c = 0.7272(3) nm), Tb3Cu4Sn4
(Gd3Cu4Ge4-type, space group Immm, a = 0.4421(3), b = 0.6939(3), c = 1.4547(5) nm), TbCu5Sn
(CeCu5Au-type, space group Pnma, a = 0.82205(1),
b = 0.49789(3), c = 1.05766(6) nm), Tb1.9Cu9.2Sn2.8 (Dy1.9Cu9.2Sn2.8-type,
space group P63/mmc, a = 0.50355(9),
c = 2.0414(6) nm) and
Tb2Cu3.5Sn5.5 (Sm2Cu4Sn5-type, space
group I4mm, a = 0.4404(4),
b = 2.5854(3) nm).
Isothermal section of the Tb–Cu–Sn system at
670 K.
Keywords
Intermetallics / Phase diagrams / X-ray
diffraction / Crystal structure