Formation of Drop-Shaped Inclusions Based on Pt, Pd, Au, Ag, Bi, Sb, Te, and As under Crystallization of an Intermediate Solid Solution in the Cu–Fe–Ni–S System

The phase and chemical composition of drop-shaped inclusions in a directionally crystallized solid solution was studied. The initial melt contained (mol %): Fe, 31.79; Cu, 15.94; Ni, 1.70; S, 50.20; Sn, 0.05; and As, 0.04, along with Pt, Pd, Rh, Ru, Ag, Au, Se, Te, Bi, and Sb each of 0.03. The results of experiments testify to the simultaneous separation of two types of liquids under cooling of the initial sulfide melt within the (Pd, Au,...