The high temperature oxidation behaviour of AISI-304 austenitic steel
was studied in the presence of Na2SO4, Fe-2(SO4)(3) or a mixture at 97
3 K in flowing air. The studies were carried out to examine the influe
nce of eutectic and solid phases present in the Na2SO4 + Fe-2(SO4)(3)
systems on the hot corrosion of AISI-304 steel which is extensively em
ployed as a high temperature structural alloy. The scale morphologies
were determined on the basis of X-ray diffraction analysis and scannin
g electron microscopy.