International Journal of Electrochemical Science · 2013 · 24 citations · 33 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryMaterials ChemistrySurface ScienceCoatingsCorrosion ResistanceCorrosion-resistant MaterialsElectrochemical CorrosionElectrode MaterialsSurface CoatingsAdhesion PropertiesCorrosion Of CoatingsCorrosion Resistance ImprovementElectrochemical Impedance AnalysisPolymeric CoatingsSecondary Ion Mass SpectrometryTime-of-flight Secondary Ion Mass SpectrometryVoltammetry
We report the growth of a poly-N-methylpyrrole coating on a Mg alloy AZ91D in aqueous sodium salicylate solution using cyclic voltammetry (CV). The electropolymerization of poly-N-methylpyrrole coating was carried out in a one step process without any further pretreatment of the AZ91D surface. The polymeric coatings were analyzed using x-ray photoelectron spectroscopy (XPS), time-of-flight secondary-ion-mass-spectrometry (ToF-SIMS) and scanning electron microscopy (SEM). The adhesion of poly-N-methylpyrrole coatings was tested applying ASTM D33359-09 standard, which showed good adhesion properties. Electrochemical impedance spectroscopy (EIS) in aqueous 0.1 M Na2SO4 solution indicates improved corrosion resistance of the coated samples compared to the bare AZ91D surface; the efficiency of protection was found to depend on the concentration of sodium salicylate used during electropolymerization.
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The anodic dissolution of magnesium in chloride and sulphate solutions
Guang‐Ling Song, Andrej Atrens, DH St John et al. · Corrosion Science · 1997 · 879 citations