Table 1 Corrosion data based on mass loss measurements for Cu in either 2.46 M or 0.10 M FeCl3, with and without organic inhibitors.
From: Corrosion inhibition of copper in ferric chloride solutions with organic inhibitors
FeCl3 solution (M) | Inhibitor | Inhibitor concentration (M) | FeCl3/inhibitor molar ratio | Corrosion rate (mm y–1) | Inhibition efficiency (η%) |
|---|---|---|---|---|---|
2.46 | None | 0 | 0 | 536 ± 40 | 0 |
MBTA | 0.130 | 19 | 104 ± 19 | 80.6 | |
BTA | 0.130 | 19 | 108 ± 16 | 79.9 | |
MBI | 0.004 | 615 | 116 ± 13 | 78.4 | |
Trp + CTAB | 0.035 0.001 | 70 2460 | 262 ± 35 | 51.2 | |
0.10 | None | 0 | 0 | 101 ± 12 | 0 |
MBTA | 5.2 × 10–3 | 19 | 0.8 ± 0.1 | 99.1 | |
BTA | 5.2 × 10–3 | 19 | 1.2 ± 0.3 | 98.9 | |
MBI | 1.6 × 10–4 | 615 | 2.6 ± 0.6 | 97.4 | |
Trp + CTAB | 1.4 × 10–3 4.0 × 10–6 | 70 2460 | 10.6 ± 3.4 | 89.5 |
