Study on the diffusion behavior of imidazoline corrosion inhibitor in simulated sediment layer
The diffusion behaviors of three imidazoline corrosion inhibitors(SOIMS,SOIM,and OIM)in simulated sediment layer were studied by adopting UV-Vis and potential dynamic polarization curve.The simulated sediment layer before and after the experiment were characterized by SEM(scanning electron microscopy)and mercury intrusion porosimetry.UV-Vis test re-sults showed that the diffusion behavior of corrosion inhibitors in solution is closely related to the water solubility;the better the water solubility of corrosion inhibitors,the stronger their ability to pass through sediment layer.The results of UV-Vis test and potential dynamic polarization curve test proved that all three corrosion inhibitors can pass through simulated sediment layer as test time increases.
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