Melting Relations of Magnesium Oxide‐Iron Oxide Mixtures in Air

Abstract

The quenching technique has been used to investigate phase relations in the liquidus temperature region of a part of the system magnesium oxide‐iron oxide. The study concerns primarily the nature of the melting behavior of the spinel phase magnesioferrite, “MgO‐Fe 2 O 3 .” This phase is shown to decompose at 1713°± 5°C. to a magnesiowüstite solid solution phase and liquid, under equilibrium conditions in air.