Oxidation behaviour of AISI-304 steel in the presence of Na2S04 and Fe2(S04)3 at 973 K

Abstract

The high temperature oxidation behaviour of AISI-304 austenitic steel was studied in the presence of Na2S04, Fe2(S04)3 or a mixture at 973 K in flowing air. The studies were carried out to examine the influence of eutectic and solid phases present in the Na2S04 + Fe2(S04)3 systems on the hot corrosion of AISI-304 steel which is extensively employed as a high temperature structural alloy. The scale morphologies were determined on the basis of X-ray diffraction analysis and scanning electron microscopy.