Research Article
Comparison of 304 SS, 2205 SS, and 410 SS Corrosion by Sulfate-Reducing Desulfovibrio ferrophilus
Table 5
Fitted electrochemical parameters from EIS data.
| | Day | Rs (Ω cm2) | Qf (Ω−1 sn cm−2) | n1 | Rf (Ω cm2) | Qdl (Ω−1 sn cm−2) | n2 | Rct (Ω cm2) | W1–R (Ω cm2) | W1–T (s) | W1–P |
| | 304 SS | | 0 | 9.2 | 1.87 × 10−5 | 0.77 | 1.60 × 104 | 1.04 × 10−5 | 0.76 | 1.34 × 106 | | | | | 1 | 10.8 | 2.78 × 10−4 | 0.95 | 5.46 | 8.08 × 10−4 | 0.84 | 4.63 × 104 | | | | | 3 | 12.1 | 7.80 × 10−4 | 0.92 | 4.17 | 2.56 × 10−3 | 0.91 | 3.93 × 104 | | | | | 5 | 10.8 | 9.49 × 10−4 | 0.94 | 4.13 | 2.37 × 10−3 | 0.90 | 4.31 × 104 | | | | | 7 | 10.7 | 9.15 × 10−4 | 0.92 | 3.63 | 2.33 × 10−3 | 0.91 | 4.80 × 104 | | | |
| | 410 SS | | 0 | 8.3 | 1.83 × 10−6 | 0.98 | 94 | 6.22 × 10−6 | 0.79 | 1.88 × 106 | | | | | 1 | 8.5 | 2.48 × 10−3 | 0.89 | 49 | 1.10 × 10−4 | 0.87 | 2.82 × 104 | | | | | 3 | 7.9 | 7.99 × 10−3 | 0.86 | 1.72×102 | 4.98 × 10−3 | 0.97 | 2.10 × 103 | 9.66 × 103 | 16.7 | 0.61 | | 5 | 7.9 | 8.45 × 10−3 | 0.85 | 52.8 | 4.86 × 10−2 | 0.93 | 1.23 × 102 | 2.35 × 104 | 24.8 | 0.82 | | 7 | 7.8 | 1.15 × 10−2 | 0.80 | 70.7 | 1.52 × 10−2 | 0.82 | 2.52 × 102 | 3.99 × 103 | 38.5 | 0.73 |
| | 2205 SS | | 0 | 7.7 | 7.45 × 10−6 | 0.84 | 4.18×102 | 1.23 × 10−5 | 0.77 | 1.86 × 106 | | | | | 1 | 8.3 | 2.26 × 10−3 | 0.88 | 1.49×102 | 1.79 × 10−12 | 0.74 | 1.70 × 104 | | | | | 3 | 8.1 | 6.84 × 10−3 | 0.94 | 64.8 | 3.98 × 10−9 | 0.75 | 7.70 × 103 | | | | | 5 | 7.9 | 6.72 × 10−3 | 0.95 | 41.5 | 1.01 × 10−8 | 0.71 | 1.57 × 104 | | | | | 7 | 7.9 | 6.76 × 10−3 | 0.94 | 56.0 | 1.09 × 10−8 | 0.70 | 2.24 × 104 | | | |
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