Research Article
Anticorrosive Effect of Halogenated Aniline Enaminoesters on Carbon Steel in HCl
Table 3
Electrochemical parameters obtained from LPR tests for halogenated aniline β-enaminoesters in 1.0 mol L-1 HCl medium in AISI 1020 carbon steel.
| Inhibitor | Conc. (mol L-1) | | (Ω cm2) | | (%) |
| Blank | — | 0.999 | 51.79 | — | — | F-EN | 1.0 × 10-5 | 0.999 | 90.79 | 0.4295 | 43.2 | 1.0 × 10-4 | 0.998 | 165.02 | 0.6810 | 68.6 | 1.0 × 10-3 | 0.997 | 202.02 | 0.7436 | 74.4 | 1.0 × 10-2 | 0.997 | 273.32 | 0.8505 | 85.0 | Cl-EN | 1.0 × 10-5 | 0.999 | 93.03 | 0.4433 | 44.3 | 1.0 × 10-4 | 0.999 | 106.34 | 0.5130 | 51.4 | 1.0 × 10-3 | 0.998 | 235.92 | 0.7805 | 78.0 | 1.0 × 10-2 | 0.998 | 339.89 | 0.8076 | 81.8 | Br-EN | 1.0 × 10-5 | 0.999 | 117.16 | 0.5579 | 55.8 | 1.0 × 10-4 | 0.999 | 126.12 | 0.5893 | 58.9 | 1.0 × 10-3 | 0.999 | 142.75 | 0.6372 | 63.7 | 1.0 × 10-2 | 0.998 | 236.11 | 0.7806 | 78.1 | H-EN | 1.0 × 10-5 | 0.8594 | 445.55 | 0.4944 | 49.1 | 1.0 × 10-4 | 0.8318 | 772.96 | 0.5085 | 51.3 | 1.0 × 10-3 | 0.8642 | 1268.8 | 0.7224 | 72.1 | 1.0 × 10-2 | 0.8383 | 2467.6 | 0.8087 | 80.8 |
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