Experimental phase diagram of the V–Si–Ho ternary system

Abstract

Abstract The phase equilibria of the V–Si–Ho ternary system at 973 K were experimentally investigated by using X-ray powder diffraction and backscattered electron imaging with energy dispersive X-ray analysis. The existence of nine binary compounds, namely, V5Si3, V6Si5, VSi2, V3Si, HoSi2−b , HoSi2−a , HoSi, Ho5Si3 and Ho5Si4 was confirmed. The phases of HoSi (FeB) and Ho4Si5 were not found at 973 K. No binary compound was found in the V–Ho binary system. No ternary compound was found at 973 K in this system. The homogeneity range of V3Si was determined to be from 22 at.% to 25 at.% Si. The maximum solid solubility of Si in V is about 4 at.%.