Breakdown of tin passivity in aqueous sodium stannate solution
作者： S. S. Add El Rehim , A. A. El Samahi , A. El Sayed
DOI: 10.1179/000705985798272669
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摘要: Abstract The electrochemical behaviour of tin anodes in 0·19 M Na2Sn(OH)6 solutions containing various concentrations Cl−, Br−, or 1− ions has been investigated. Galvanostatic potential-time curves at 1 mA cm −2 reveal that achievement electrode passivity is inhibited by the presence halide ions, but eventually attained; extent inhibition directly proportional to ion concentration. At 5 cm−2 and high Cl− concentrations, a breakdown anode observed. Potentiostatic current density-potential show all halides investigated inhibit anodic dissolution active region, tend break down permanent passivation leading pitting attack. critical potential shifts progressively more negative values with increasing In experiments, aggressive action decreased order > Br− l−. discussed light earlier theories.
sci-hub.se 参考文章(15)
A. M. Azzam, S. S. El Abd Rehim, M. H. Fawzy, Anodic behaviour and passivation of tin in alkaline-stannate plating solutions Journal of Applied Chemistry and Biotechnology. ,vol. 23, pp. 563- 571 ,(2007) , 10.1002/JCTB.5020230802
A. N. Frumkin, The Double Layer in Electrochemistry Journal of The Electrochemical Society. ,vol. 107, pp. 461- 472 ,(1960) , 10.1149/1.2427720
Ja. M. Kolotyrkin, Effects of Anions on the Dissolution Kinetics of Metals Journal of The Electrochemical Society. ,vol. 108, pp. 209- 216 ,(1961) , 10.1149/1.2428048
J.M. Costa, J.R. Culleré, The effect of additives on the corrosion of tin in alkaline solution Corrosion Science. ,vol. 16, pp. 587- 590 ,(1976) , 10.1016/S0010-938X(76)80017-0
T.P. Hoar, D.C. Mears, G.P. Rothwell, The relationships between anodic passivity, brightening and pitting* Corrosion Science. ,vol. 5, pp. 279- 289 ,(1965) , 10.1016/S0010-938X(65)90614-1
T. P. Hoar, The corrosion of tin in nearly neutral solutions Transactions of The Faraday Society. ,vol. 33, pp. 1152- 1167 ,(1937) , 10.1039/TF9373301152
F.M.Abd El Wahae, J.M.Abd El Kader, H.A. El Shayeb, A.M.Shams El Din, On the pitting corrosion of tin in aqueous solutions Corrosion Science. ,vol. 18, pp. 997- 1009 ,(1978) , 10.1016/0010-938X(78)90034-3
Ashok K. Vijh, The influence of solid state cohesion of metals on their pitting potentials Corrosion Science. ,vol. 12, pp. 935- 938 ,(1972) , 10.1016/S0010-938X(72)80101-X
M. S. ABDELAAL, A. H. OSMAN, Anodic Polarization of Tin, Nickel, and a 65/35 Tin-Nickel Alloy in Alkaline Media Containing Halide Ions Corrosion. ,vol. 36, pp. 591- 596 ,(1980) , 10.5006/0010-9312-36.11.591
S.S. Abd El Rehim, S.M. Abd El Haleem, S.M. Abd-El Wahaab, M.Sh. Shalaby, Corrosion behaviour of 18-8 austenitic stainless steel in NaOH solutions and the effect of chloride ions Surface Technology. ,vol. 19, pp. 261- 271 ,(1983) , 10.1016/0376-4583(83)90030-4