Back to Search
Start Over
Adsorption mechanism of quaternary ammonium corrosion inhibitor on carbon steel surface using ToF-SIMS and XPS.
- Source :
-
Corrosion Science . Apr2023, Vol. 213, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- 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. • The adsorption of BDA-C14 corrosion inhibitor on carbon steel surface was studied by ToF-SIMS and XPS. • The inhibitor 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. • The critical concentration for a maximum and uniformed inhibitor coverage on carbon steel is determined. • The uniform adsorbed inhibitor layer on carbon steel can mitigate the formation of iron chloride/hydroxide intermediates. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0010938X
- Volume :
- 213
- Database :
- Academic Search Index
- Journal :
- Corrosion Science
- Publication Type :
- Academic Journal
- Accession number :
- 161792177
- Full Text :
- https://doi.org/10.1016/j.corsci.2022.110952