期刊
CORROSION
卷 76, 期 11, 页码 -出版社
NATL ASSOC CORROSION ENG
DOI: 10.5006/3606
关键词
adsorption; corrosion inhibitors; molecular simulations
资金
- NSF CBET grant [1705817]
- Ohio University Graduate College Fellowship
- NSF XSEDE grant [DMR190005]
While both field experience and laboratory experiments have shown that the efficiency of adsorbed corrosion inhibitor films improves upon exposure of the aqueous solution to a hydrocarbon phase, a credible explanation of these results is lacking. Using a combination of experiments and molecular simulations, this study examines how exposure to oil molecules affects the nature of adsorbed corrosion inhibitor films on metal surfaces. It is found that oil molecules get coadsorbed in the corrosion inhibitor films, making them more hydrophobic, structurally more ordered, and well packed. Corrosion inhibitor molecules with a bulky polar head adsorb in nonplanar, cylinder-like morphologies. Coadsorption of oil molecules changes the morphology of these films to a planar self-assembled monolayer.
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