Table 1 Weight loss corrosion rate (C.R.) and the protection efficiency (ɳw%) of the different coated mild steel samples as measured in 3.5 wt.% NaCl solution after 24 h immersion.
CGAC dose in the coating | C.R. (µg cm-2 h-1) | ɳw (%) |
|---|---|---|
Bare steel | 7.11 ± 0.005 | – |
25 ppm | 1.28 ± 0.004 | 82.41 |
50 ppm | 1.09 ± 0.001 | 84.67 |
100 ppm | 0.67 ± 0.003 | 90.58 |
200 ppm | 0.22 ± 0.002 | 96.91 |