Contribution to the investigation of the Ti–Dy–Sn system

Chem. Met. Alloys 2 (2009) 83-88

https://doi.org/10.30970/cma2.0097

Yulia V. FARTUSHNA, Andrej V. KOTKO, Marina V. BULANOVA

A new ternary compound, Ti4.2-4.3Dy0.8-0.7Sn≲3 (t), was found in the Ti–Dy–Sn system. It exists at an almost constant concentration of tin (~36.5 at.%), but has a certain homogeneity region (8.2 to 10.2 at.% Dy) due to mutual substitution of titanium and dysprosium. The crystal system was determined to be hexagonal with preliminary lattice parameters а = 4.94 Å, с = 5.65 Å. The compound melts congruently above 1500°С and coexists with (Ti₃Sn), (Dy₅Sn₃), (Ti₂Sn), and (Ti₅Sn₃).

Typical view of a particle extracted from the as-cast 52.5Ti–10Dy–37.5Sn alloy for ТEM examinations: а) ×100000, b) ×400000.

Keywords

Ternary compound / Crystal structure / Phase equilibrium