Phase equilibria in the ternary Al–Zr–La system

The phase relationships in the Al–Zr–La ternary system at 773 K have been investigated for the first time mainly by means of X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive analysis (EDX). The existence of the Al4La5 and AlLa2 binary compounds has been confirmed in this ternary system. The isothermal section consists of 18 single-phase regions, 33 two-phase regions and 16 three-phase regions. No ternary compound was observed in this work.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ Existences of 15 binary compounds including Al4La5 and AlLa2 were confirmed. ▶ No ternary compound is found in Al–Zr–La system at 773 K. ▶ 16 three-phase regions construct the isothermal section.