Phase equilibria in the SmCoSn ternary system at 870 K and 770 K

 

Chem. Met. Alloys 1 (2008) 198-203

 

L. ROMAKA, V.V. ROMAKA, M. KONYK, N. MELNYCHENKO-KOBLYUK

 

The phase diagram of the SmCoSn ternary system was constructed at 770 K (more than 55 at.% Sn) and 870 K (055 at.% Sn) using X-ray and metallographic analyses. Seven ternary intermetallic compounds, Sm3Co8Sn4 (Lu3Co7.77Sn4-type), Sm6Co2Sn (Ho6Co2Ga-type), Sm12Co6Sn (Sm12Ni6In-type), Sm3Co6Sn5 (Dy3Co6Sn5-type), Sm2CoSn2 (related to the Tb117Fe52Ge112-type), SmCo1-xSn2-y (CeNiSi2-type), and Sm6Co8Sn26 (Yb6Rh8Sn26-type), are formed in this system at the investigated temperatures.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Electron micrograph of the Sm35Co30Sn35 alloy.

 

Keywords

Intermetallics / X-ray diffraction / Phase diagrams / Crystal structure