1. Corrosion inhibition of steel in seawater through surface phosphate formed from oil
- Author
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Poon, Jeffrey, Madden, David, Welbourn, Rebecca, Allen, Finian, Khan, Fahmida, Sonke, Hans, Clarke, Stuart, Poon, Jeffrey [0000-0003-0145-8710], Madden, David [0000-0002-4159-6547], Allen, Finian [0000-0002-9823-562X], Clarke, Stuart [0000-0001-5224-2368], and Apollo - University of Cambridge Repository
- Subjects
corrosion ,neutron reflectometry ,water exposure ,technology, industry, and agriculture ,steel ,surface analysis ,phosphate - Abstract
Bis(2-ethylhexyl) phosphate (BEHP) was exposed to carbon steel surfaces from dry and water-saturated dodecane. The resulting changes to the surfaces were characterised using spectroscopic techniques (energy dispersive X-ray (EDX), X-ray photoelectron (XPS), and far-infrared reflection absorption (RAIRS) spectroscopies) and polarised neutron reflectometry (PNR). Although there was no observable affinity of BEHP to the steel surface in dry solvent, a layer of rough iron (III) phosphate formed in water-saturated dodecane. The phosphate-reacted steel surface showed some resistance to corrosion by seawater, suggesting the formation of a cohesive barrier against corrosive species. The results support the use of BEHP as an anti-corrosion additive and a viable phosphating agent for steel surfaces.
- Published
- 2021