Effect of Additional Sulfide and Thiosulfate on Corrosion of Q235 Carbon Steel in Alkaline Solutions

Figure 5

XPS patterns Fe 2p (a), S2p (b), and O1s (c) of Q235 steel surface corrosion: (I) FeS; (II) Fe₃O₄; (III) FeS₂; (IV) FeOOH.

(a)

(b)

(c)