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

Table 5

EIS fitting results of Q235 steel in alkaline solutions with different concentrations of S²⁻ and .

Concentration/g⋅L^−1	/Ω⋅cm^2	/Ω⋅cm^2	/Ω^−1⋅cm^−2⋅s		/Ω⋅cm^2	/Ω^−1⋅cm^−2⋅s
5 g⋅L^−1 S^2− + 5 g⋅L^−1	0.441	67.48	0.00132	0.88	12134	0.0074	0.52
5 g⋅L^−1 S^2− + 4 g⋅L^−1	0.288	1.235	0.093	0.89	48.46	0.173	0.61
5 g⋅L^−1 S^2− + 0 g⋅L^−1	0.743	78.21	0.26	0.99	105.4	0.149	0.92
0 g⋅L^−1 S^2− + 4 g⋅L^−1	1.969	4234	0.0002	0.97	77719	0.00002	0.62