Research Article
Development of a New Multifunctional Cationic Surfactant System with Corrosion Inhibiting Ability
Table 2
Weight loss results for N80 steel in 20 wt.% HCl in the absence and presence of inhibitor for 4 h.
| Entry | Surfactants | (°C) | (wt.%) | (g m−2 h−1) | | IE% |
| (1) | 20% HCl | 90 | 0 | 593.8 | | | (2) | 20% HCl | 60 | 0 | 281.3 | | | (3) | 2a | 90 | 1.0 | 46.2 | 0.922 | 92.2 | (4) | 2b | 90 | 1.0 | 10.4 | 0.982 | 98.2 | (5) | 2b | 60 | 1.0 | 3.75 | 0.982 | 98.2 | (6) | 2c | 90 | 1.0 | 17.2 | 0.971 | 97.1 | (7) | 2c | 90 | 0.39 | 12.8 | 0.979 | 97.9 | (8) | 2c | 90 | 0.10 | 32.4 | 0.945 | 94.5 | (9) | 2c | 90 | 0.039 | 59.8 | 0.899 | 89.9 | (10) | 2c | 90 | 0.010 | 517.4 | 0.129 | 12.9 | (11) | 2d | 90 | 1.0 | 20.7 | 0.965 | 96.5 | (12) | 2e | 90 | 1.0 | 163.4 | 0.725 | 72.5 |
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