Passivation and pitting corrosion of tin in gluconate solutions and the effect of halide ions
作者： S. A. M. Refaey
DOI: 10.1007/BF01021973
关键词: Cyclic voltammetry 、 Concentration effect 、 Sodium gluconate 、 Electrochemistry 、 Tin 、 Halide 、 Passivation 、 Chemistry 、 Inorganic chemistry 、 Pitting corrosion
摘要: The passivation and pitting corrosion of tin in sodium gluconate (SG) solutions was studied by using potentiodynamic cyclic voltammetric techniques. Some samples were examined X-ray SEM. effect the concentration ion, pH, potential scanning rate, successive voltammetry, switching progressive additions halide ions on a anode discussed. data obtained show that low concentrations SG have an inhibition neutral media. increases with increasing due to formation soluble tin-gluconate complex. critical depends ion concentration, pH scan rate. Two cathodic peaks are observed polarization curve, corresponding reduction dissolved products. shifts progressively more negative values concentration. In all experiments, aggressive action halides decreased order Cl−>Br−>I−.
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