Hot corrosion behaviour of inconel 617 in mixed salt environment at 900 and 1000 °c for gas turbine applications

Abstract

An attempt is made to study the hot corrosion behaviour of Inconel 617 under mixed salt environment (Na2SO4, NaCl and/or V2O5) at 900 and 1000 °C. The results were analysed and discussed with respect to mass change, XRD, optical image and SEM/EDAX. The oxide scales are enriched with Ni, Cr, Mo and Co at elevated temperatures. The presence of V2O5 in the salt mixture is found to be the most influencing corrosion species for hot corrosion.