Condition | I corr (A/µcm2) | Corrosion rate (mils/year) | Ecorr (mV) | ßa mv/decade | ßc mv/decade |
NS4 | 21.2 | 20.2 | −642 | 130 | 160 |
NS4 + 0.4 MNa2S | 31 | 30 | −720 | 162 | 170 |
NS4 + 2 mNa2S | 15.34 | 14.74 | −667 | 151.5 | 200 |
NS4 + 4 mNa2S | 15.5 | 15 | −768 | 37.4 | 162.8 |
NS4 + 10 mNa2S | 18.8 | 18.1 | −627 | 180 | 175 |