Research Article
Effect of Nitrite Ions on Steel Corrosion Induced by Chloride or Sulfate Ions
Table 2
Experimental design for sulfate-induced corrosion.
| pH | mol/L | mol/L |
| pH 12.6 ± 0.3 | 0 | — | — | — | 0.2 | 0.1* | 0.05 | 0.025 | 0.02 | 0.2 | 0.1* | 0.04 | 0.02 | 0.01 | — | — | 0.053 | — | 0.265 | 0.106 | 0.053 | 0.027 | 0.013 | — | 0.2 | — | — | 0.4 | 0.2 | 0.1* | 0.05 | 0.025 |
| pH 10.3 ± 0.3 | 0 | — | — | — | 0.2 | 0.1* | 0.05 | 0.025 | 0.02 | 0.2 | 0.1* | 0.04 | 0.02 | 0.01 | — | — | 0.053 | — | 0.265 | 0.106 | 0.053 | 0.027 | 0.013 | — | 0.2 | — | — | 0.4 | 0.2 | 0.1* | 0.05 | 0.025 |
| Distilled water | 0 | — | — | — | 0.2 | 0.1* | 0.05 | 0.025 | 0.02 | 0.2 | 0.1* | 0.04 | 0.02 | 0.01 | — | — | 0.053 | — | 0.265 | 0.106 | 0.053 | 0.027 | 0.013 | — | 0.2 | — | — | 0.4 | 0.2 | 0.1* | 0.05 | 0.025 |
| Mole ratio of / | 0.1 | 0.2 | 0.5 | 1 | 2 | 4 | 8 |
|
|