Peculiarity of component interaction in Er–Fe–Sn ternary system at 670 K and 770 K

Abstract

The isothermal sections of the phase diagram of Er–Fe–Sn ternary system were constructed at 770 and 670 K in the whole concentration range using X-ray and metallographic analyses. Component interaction in the Er–Fe–Sn system at 670 K results the existence of two ternary compounds, ErFe 6Sn 6 (YCo 6Ge 6-type) and Er 5Fe 6Sn 18 (Tb 5Rh 6Sn 18-type), while at 770 K only one intermediate ErFe 6Sn 6 phase was observed. The existence of the interstitial solid solution ErFe x Sn 2 (up to 5 at.% Sn) was found at both temperatures.