Phase equilibria in the ternary system Sm–Al–B at 600°C

Chem. Met. Alloys 11 (2018) 23-26

https://doi.org/10.30970/cma11.0380

Taras SLIVINSKIY, Yaroslav TOKAYCHUK, Roman GLADYSHEVSKII

The isothermal section of the phase diagram of the system Sm–Al–B at 600°C was constructed. The binary compounds do not dissolve significant amounts the third component. One ternary compound, Sm₃AlB_x (x ≈ 0.1) was found in the system. The crystal structure of the metal (Sm/Al) sublattice of the new compound belongs to the structure type Cu₃Au (Pearson symbol cP4, space group Pm-3m, a = 4.832(2) Å). The boron atoms are likely to occupy octahedral voids in the structure, in an arrangement corresponding to the structure type CaTiO₃.

Isothermal section of the phase diagram of the system Sm–Al–B at 600°C.

Keywords

Samarium / Aluminum / Boron / X-ray powder diffraction / Phase diagram