| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469401 | Corrosion Science | 2012 | 8 Pages |
Corrosion inhibition of an amido-imidazoline derivative on API 5L X52 steel in CO2 saturated 3 wt% NaCl solution was investigated. The effect of iodide ion additives was also studied by using electrochemical techniques. The results showed that amido-imidazoline derivative inhibited corrosion of steel and the extent of its inhibition was concentration dependent. Potentiodynamic polarization investigations revealed that amido-imidazoline acted as a mixed inhibitor showing anodic and cathodic behaviour. Furthermore, the inhibition efficiency of amido-imidazoline was enhanced by addition of iodide ions due to synergistic effect. It was also found that amido-imidazoline adsorbed chemically on the steel surface and followed the Langmuir adsorption isotherm.
► The CO2 corrosion inhibition of steel was studied by using imidazoline derivative. ► The inhibition efficiency of amido-imidazoline was enhanced by addition of I− ions. ► Amido-imidazoline acted as a mixed inhibitor showing anodic and cathodic behaviour. ► The adsorption of inhibitor on the steel surface followed the Langmuir isotherm. ► The studied inhibitor was chemically adsorbed on the surface of steel.
