Effect of Oxygen Concentration in a Gaseous Mixture with Argon on the Phase Composition of Plasmodynamic Synthesis Products in an Iron–Oxygen System

Abstract

The effect of a gaseous oxygen concentration in a mixture with argon on plasmodynamic synthesis products in an iron–oxygen system is described. X-ray diffractometry and scanning and transmission electron microscopy data showed that the products contain three different modifications of iron oxide: magnetite Fe₃O₄, hematite α-Fe₂O₃, and ε-Fe₂O₃ epsilon phase. A change in oxygen concentration leads to a significant change in the phase composition of the products and an increase in a yield of the ε phase.