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Article Dans Une Revue Corrosion Science Année : 2023

Adsorption mechanism of quaternary ammonium corrosion inhibitor on carbon steel surface using ToF-SIMS and XPS

Résumé

ToF-SIMS and XPS are combined to study the adsorption of tetradecyl-benzyldimethyl-ammonium (BDA-C14) bromide corrosion inhibitor on carbon steel surface. BDA-C14 forms a protective layer with N-containing polar head group interacting with carbon steel surface. The adsorbed inhibitor surface coverage strongly depends on immersion time and inhibitor concentration. A maximum and uniform coverage is found for sufficiently long exposure times at a critical inhibitor concentration of about 25 ppm w. The uniform adsorbed inhibitor layer formed on the surface mitigates the formation of iron chloride/hydroxide intermediates and thus enhances the corrosion protection of carbon steel in aggressive environment.

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Chimie
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Dates et versions

hal-03969214 , version 1 (02-02-2023)

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Luntao Wang, Huiru Wang, Antoine Seyeux, Sandrine Zanna, Alain Pailleret, et al.. Adsorption mechanism of quaternary ammonium corrosion inhibitor on carbon steel surface using ToF-SIMS and XPS. Corrosion Science, 2023, 213, pp.110952. ⟨10.1016/J.CORSCI.2022.110952⟩. ⟨hal-03969214⟩
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