Research Article
Marjoram Extract as Corrosion Inhibitor for Dissolution of Zinc in 1.0 M HCl
Table 4
Effect of temperature on the corrosion parameters of zinc in 1.0 M HCl and 1.0 M HCl + 500 ppm of marjoram extract.
| | System | (K) | (mV SCE) | (mA cm−2) |
IE (%) |
| | 1.0 M HCl | 303 | −996 | 2.41 | — | | 313 | −1002 | 2.81 | — | | 323 | −1001 | 3.96 | — | | 333 | −999 | 4.73 | — | | 343 | −1001 | 5.58 | — |
| | 1.0 M HCl + 500 ppm inhibitor | 303 | −974 | 0.18 | 92.50 | | 313 | −979 | 0.25 | 91.10 | | 323 | −985 | 0.38 | 90.40 | | 333 | −990 | 0.49 | 89.60 | | 343 | −990 | 0.66 | 88.20 |
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