75 research outputs found
Substituted tertiary arsine and phosphines as interfacial adsorption inhibitors for corrosion of zinc in perchloric acid
Polarized Neutron Reflectometry of Nickel Corrosion Inhibitors.
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.X-ray photoelectron spectra were obtained at the National Engineering and Physical Sciences Research Council (EPSRC) XPS User’s Service (NEXUS) at Newcastle University, an EPSRC midrange facility. NR data were obtained on the D17 instrument, and samples were treated in the laboratories of the Partnership for Soft Condensed Matter (PSCM) at the Institut Laue-Langevin. M.H.W. is grateful for funding from the Oppenheimer Trust.This is the final version of the article. It first appeared from the American Chemical Society via http://dx.doi.org/10.1021/acs.langmuir.5b0171
Benzoic acid and substituted benzoic acids as interfacial corrosion inhibitors for copper in HClO4
Closure to “Discussion of ‘Electron Transfer Reactions at Passive Tin Electrodes’ [S. Kapusta and N. Hackerman (pp. 327–332, Vol. 128, No. 2)]”
Closure to “Discussion of ‘The Ag+‐Ag Exchange Reaction in Aqueous Acidic Nitrate Electrolyte’ [D. Larkin and N. Hackerman (pp. 360–363, Vol. 124, No. 3)]”
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