Journal of The Electrochemical Society · 1992 · 100 citations · 0 references
Natural SciencesChemistryMaterials ScienceCorrosion ScienceElectrochemical EngineeringElectrochemistryCorrosion EngineeringCorrosion EvaluationCorrosion InhibitorsCorrosion MechanismsCorrosion-resistant MaterialsElectrochemical CorrosionCorrosion Inhibitor EvaluationCorrosion Inhibitors For Aluminum AlloysCorrosion Of Aluminum AlloysElectrochemical Inhibition MechanismsElectrochemical NoiseElectrochemical Noise AnalysisPolarizationPolarization Curves
The corrosion potential fluctuations of aluminium alloy AA 6351 electrodes in 0.5 M chloride solutions were recorded both in the absence and in the presence of the following inhibitors: 2-mercapto-pyrimidine, sodium molybdate and sodium nitrate. The corresponding spectral density plots, calculated over a wide frequency range, are discussed in order to evaluate the possibility of finding the mechanism of action of the additives, by analyzing the electrochemical noise. As a reference, the polarization curve of the alloy in the various solutions are reported.