Research Article
The Effect of Concentration of Lawsonia inermis as a Corrosion Inhibitor for Aluminum Alloy in Seawater
Table 4
Nyquist parameters for aluminum alloy in the absence and presence of Lawsonia inermis.
| Concentration (ppm) | (V/dec) | (V/dec) | (V) | (A/cm2) | Corr. rate (mm/year) | (%) |
| 0 | 0.27 | 0.26 | −0.72 | | 1.10 | — | 200 | 0.09 | 0.12 | −0.73 | | 0.32 | 79 | 400 | 0.07 | 0.07 | −0.74 | | 0.28 | 89 | 600 | 0.07 | 0.12 | −0.76 | | 0.09 | 93 | 800 | 0.12 | 0.19 | −0.73 | | 0.40 | 89 | 1000 | 0.13 | 0.19 | −0.74 | | 0.18 | 81 |
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