The ternary
Eu-Cu-Si system at 400°C
Chem.
Met. Alloys 1
(2008) 343-347
https://doi.org/10.30970/cma1.0077
Bohdana BELAN, Mykola MANYAKO, Roman GLADYSHEVSKII
Based on X-ray diffraction and
microstructure analysis the isothermal section at 400°C of the phase diagram of
the system Eu-Cu-Si was built. The compound EuCu2Si2
(CeAl2Ga2 structure type) was confirmed and its
homogeneity region was determined (EuCu2.25-1.50Si1.75-2.50).
The compound EuCu0.80-0.20Si1.20-1.80 (AlB2
structure type) is also characterized by a variable content of copper and
silicon. In addition, four new compounds with unknown structure were found in
this system. The effective valence of europium was studied.
Isothermal section
of the phase diagram of the Eu-Cu-Si system at 400°C.
Keywords
Isothermal section / Crystal
structure / Effective valence