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

Figure 1

Morphologies (SEM) of Q235 carbon steel in alkaline solutions with different concentrations of S²⁻ and S₂ at 328 K. (a) 0 g⋅L⁻¹ S²⁻ and 0 g⋅L⁻¹ S₂, (b) 0 g⋅L⁻¹ S²⁻ and 4 g⋅L⁻¹ S₂, (c) 5 g⋅L⁻¹ S²⁻ and 0 g⋅L⁻¹ S₂, (d) 5 g⋅L⁻¹ S²⁻ and 4 g⋅L⁻¹ S₂, (e) 5 g⋅L⁻¹ S²⁻ and 5 g⋅L⁻¹ S₂.