Investigation of phase diagram of the Y–Cu–Pb system at 870 K

Abstract

The phase diagram of the Y–Cu–Pb ternary system at 870 K has been constructed using X-ray phase analysis. Three ternary compounds were found and their crystal structures were determined: YCu 5− x Pb x , x=0.26–0.89 (AuBe 5 structure type, space group F4̄3m, a=7.0993–7.1448(2) Å), YCuPb (LiGaGe structure type, space group P6 3mc , a=4.5585(1) Å, c=7.3328(2) Å) and Y 5CuPb 3 (Hf 5CuSn 3 structure type, space group P6 3/mcm , a=9.0509(6) Å, c=6.6295(3) Å).