Chemical Interaction of Ferric Oxide with Sodium Sulfate at High Temperature Relevant to Hot corrosion

The studies include the results and discussion related with reaction of Fe2O3 with Na2SO4 in presence of SO2 (g) at 800 and 900 °C. The iron oxides are produced by the oxidation of iron base alloys in many industrial operations. The metal oxide undergoes certain high temperature chemical reactions in presence of a gas (such as SO2) and molten salts (say Na2SO4). The thermo-gravimetric studies had been carried out as a function of variation in Na2SO4 concentration in the mixture. The reaction products were identified by XRD analysis. Surface morphologies of the products are discussed on the basis of metallographic and scanning electron microscopic (SEM) studies.