Research Article
Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water
Table 4
Influence of duration of immersion on IE of caffeine (200 ppm)-Zn2+ (50 ppm).
| | System | Immersion period (days) | CR (mdd) |
IE (%) | | Presence of inhibitor | Absence of inhibitor
|
| | Caffeine (200 ppm)-Zn2+ (50 ppm) | 1 | 2.04 | 20.40 | 90 | | 3 | 4.04 | 22.42 | 82 | | 5 | 55.14 | 68.92 | 20 | | 7 | 80.16 | 93.21 | 14 |
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