RODUCTION OF IRON OXIDE POWDER BY CARBAMIDE DEPOSITION

Abstract

Iron oxide powders are an important group of inorganic materials widely used in industry due to their accessibility, stability of properties and a variety of color shades. Their coloration is due to the presence of iron (II) and (III) oxides, as well as their hydrated forms. Depending on the composition and structure, the powders can be yellow (hydrated iron III oxide, goethite), red (hematite), black (magnetite) or brown (mixed phases). Synthetic iron oxide powders have high chemical purity, color purity, dispersion and resistance to light, alkalis and weak acids, which makes them in demand in industry, for example in the production of paints, plastics, building materials, ceramics, magnetic materials and radiation protection coatings.