Time (days) | Film Thickness (μm) | Inhibition Efficiency (%) | ||||
HCl | HNO3 | HClO4 | HCl | HNO3 | HClO4 | |
1 | 13.904 | 12.746 | 13.209 | 61.43 | 30.95 | −3.09 |
4 | 7.879 | 9.965 | 11.355 | 48.51 | 24.46 | −17.34 |
7 | 6.025 | 7.647 | 6.025 | 38.44 | 6.35 | −47.45 |