Constituted oxides/nitrides on nitriding 304, 430 and 17-4 PH stainless steel in salt baths over the temperature range 723 to 923Â K

► For a given nitriding process, 17-4 PH stainless steel obtained a thickest nitrided film among three samples used in this study. ► The constituted phases situated in the nitrided films on 304, 430 and 17-4 PH stainless steels were analysed and reported. ► The highest N 1s counts were detected from the nitrided film on the 17-4 PH stainless steel.