Research Article
Inhibitive Action of Ferrous Gluconate on Aluminum Alloy in Saline Environment
Table 2
Electrochemical polarization parameters for aluminium alloy in 0.05 M NaCl solution in the absence and presence of ferrous gluconate at 28°C.
| Concentration of inhibitor (g/mL) | Current density (A/cm2) | Anodic Tafel constant (V/dec) | Cathodic Tafel constant (V/dec) | Linear polarization (cm2) | Corrosion potential (V) | Corrosion rate (mm/yr) |
| 0.0 | | 0.05087 | 0.08004 | | −0.75893 | 0.27787 | 0.5 | | 0.17081 | 0.39458 | | −1.05640 | 0.02334 | 1.0 | | 0.74904 | 1.50350 | | −0.34318 | 0.00016 | 1.5 | | 0.52492 | 0.54034 | | −0.57367 | 0.00554 | 2.0 | | 1.92670 | 0.96634 | | −0.34318 | 0.00021 |
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