Polarized Neutron Reflectometry of Nickel Corrosion Inhibitors

Mary H. Wood, Rebecca J.L. Welbourn, Ali Zarbakhsh, Philipp Gutfreund, Stuart M. Clarke

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

(Graph Presented). Polarized neutron reflectometry has been used to investigate the detailed adsorption behavior and corrosion inhibition mechanism of two surfactants on a nickel surface under acidic conditions. Both the corrosion of the nickel surface and the structure of the adsorbed surfactant layer could be monitored in situ by the use of different solvent contrasts. Layer thicknesses and roughnesses were evaluated over a range of pH values, showing distinctly the superior corrosion inhibition of one negatively charged surfactant (sodium dodecyl sulfate) compared to a positively charged example (dodecyl trimethylammonium bromide) due to its stronger binding interaction with the surface. It was found that adequate corrosion inhibition occurs at significantly less than full surface coverage.

Original languageEnglish
Pages (from-to)7062-7072
Number of pages11
JournalLangmuir
Volume31
Issue number25
DOIs
StatePublished - Jun 30 2015
Externally publishedYes

Funding

FundersFunder number
Newcastle University
University of Cambridge

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