caa a22 4500 47705126X CHVBK 20180405111340.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF01021973 doi (NATIONALLICENCE)springer-10.1007/BF01021973 Refaey S. Chemistry Department, Faculty of Science, Minia University, 61111, Minia, Egypt aut Passivation and pitting corrosion of tin in gluconate solutions and the effect of halide ions [Elektronische Daten] [S. Refaey] The passivation and pitting corrosion of tin in sodium gluconate (SG) solutions was studied by using potentiodynamic and cyclic voltammetric techniques. Some samples were examined by X-ray and SEM. The effect of the concentration of gluconate ion, pH, potential scanning rate, successive cyclic voltammetry, switching potential and progressive additions of halide ions on the passivation and pitting corrosion of a tin anode was discussed. The data obtained show that low concentrations of SG have an inhibition effect on the pitting corrosion of tin in neutral media. The pitting corrosion of tin increases with increasing SG concentrations due to the formation of soluble tin-gluconate complex. The critical pitting potential depends on the gluconate ion concentration, pH and scan rate. Two cathodic peaks are observed in the cathodic polarization curve, corresponding to the reduction of the dissolved pitting corrosion products. The critical pitting potential shifts progressively to more negative values with increasing halide ion concentration. In all experiments, the aggressive action of halides decreased in the order Cl−>Br−>I−. Chapman & Hall, 1996 Journal of Applied Electrochemistry Kluwer Academic Publishers 26/5(1996-05-01), 503-507 0021-891X 26:5<503 1996 26 10800 https://doi.org/10.1007/BF01021973 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01021973 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Refaey S. Chemistry Department, Faculty of Science, Minia University, 61111, Minia, Egypt aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 26/5(1996-05-01), 503-507 0021-891X 26:5<503 1996 26 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer