Experimental study of the 773Â K isothermal section in the Ce-Ti-Si ternary system

The isothermal section at 773 K of the Ce-Ti-Si ternary system has been investigated by means of X-ray powder diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDX). The existences of 11 binary compounds, namely Ce5Si3, Ce3Si2, Ce5Si4, CeSi, Ce3Si5, CeSi2, Ti3Si, Ti5Si3, Ti5Si4, TiSi and TiSi2 have been confirmed. No ternary compound was found in this work. The results show that the phase equilibria consists of 14 single-phase regions, 25 binary phase regions and 12 ternary phase regions. The existence of the binary compound Ce5Si3 with the Cr5B3-type crystal structure (space group: I4/mcm, a = 0.7890, c = 1.373) was experimentally confirmed.