450 °C Isothermal Section of the Fe-Al-Sb Ternary Phase Diagram

摘要

The 450 °C isothermal section of the Fe-Al-Sb ternary phase diagram has been determined experimentally using scanning electron microscopy coupled with energy dispersive x-ray spectroscopy, and x-ray diffraction. No ternary compound is found in this system at 450 °C. Experimental results indicate that Sb cannot dissolve in the Fe-Al compounds, e.g. FeAl2, Fe2Al5, and FeAl3. While the maximum solubilities of Al in FeSb and FeSb2 are 3.2 and 1.3 at.%, respectively, and 0.5 at.% Fe is detected in AlSb.