Effect of Nitrite Ions on Steel Corrosion Induced by Chloride or Sulfate Ions

Table 5

Relationship between 𝐸_corr and log(NO₂⁻/SO₄²⁻).

NO2^− mol/L	pH	𝐸𝐹, mV versus CSE	𝐸corr = 𝑎*log(N𝑂2^−/SO4^2−) + 𝑏
			𝑎	𝑏	𝑅^2
0.02	12.6	−330	27.9	−284.1	0.47
0.053	12.6	−330	−6.3	−279.8	0.25
0.2	12.6	−330	47.0	−321.4	0.69
0.02	10.1	−205	283.1	−280.2	0.87
0.053	10.1	−205	310.3	−324.3	0.85
0.2	10.1	−205	177.3	−290.4	0.65
0.02	8.26	−113	347.6	−327.5	0.93
0.053	8.26	−113	371.4	−303.7	0.96
0.2	8.1	−105	98.7	−141.4	0.50