The influence of silicate and sulphate anions on the anodic corrosion and the transpassivity of iron and silicon-rich steel in concentrated KOH solution
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Abstract
Abstract The effect of sulphate and silicate addition in a 10 M KOH electrolyte on the anodic corrosion and transpassivity of iron and steel rich in silicon are explored by cyclic and linear sweep voltammetry. Formation of ferrate(VI) in the iron transpassivity region is noticed in all explored electrolytes. The electrochemical sulphato- and silico-ferrate(VI) formation is discussed as a possible result of Fe 3 III ( Si 1.32 Fe 0.68 ) O 5 (OH) 4 and [Fe(II) 4 Fe(III) 2 (OH) 12 ]SO 4 oxidation in the 10 M KOH electrolytes with silicate and sulphate, respectively. The presence of Fe 3 (Si 1.32 Fe 0.68 )O 5 (OH) 4 in the anodic layer of silicon steel and the crystal structure of electrochemically synthesised Ba(Fe, S)O 4 have been revealed by XRD.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Analytical Chemistry and Sensors
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References (47)
Show source-provided references
1. The influence of electrolyte composition on electrochemical ferrate(VI) synthesis. Part II: anodic dissolution kinetics of a steel anode rich in silicon10.1007/s10800-011-0332-x ↗
2. The influence of electrolyte composition on electrochemical ferrate(VI) synthesis. Part I: anodic dissolution kinetics of pure iron10.1007/s10800-009-0051-8 ↗
3. Research progress in the electrochemical synthesis of ferrate(VI)10.1016/j.electacta.2008.11.034 ↗
4. Electrochemical ferrate generation for waste water treatment using cast irons with high silicon contents10.1023/A:1014269523898 ↗
5. Direct electrochemical preparation of solid potassium ferrate10.1016/S1388-2481(02)00438-1 ↗
6. The cyclic voltammetric study of ferrate(VI) production10.1016/S0022-0728(96)04939-X ↗
7. Influence of anode material on current yield during ferrate(VI) production by anodic iron dissolution10.1007/BF00242044 ↗
8. Transpassive dissolution of iron to ferrate(VI) in concentrated alkali hydroxide solutions10.1016/0013-4686(85)80079-7 ↗
9. Rapid chemical synthesis of barium ferrate, BaFe(VI)O410.1016/S0378-7753(02)00041-1 ↗
10. J.P. Deininger, R.L. Dodson, Process for Preparing Potassium Ferrate K2FeO4, US Pat. 4405573, 1983.
11. O.E. Evrard, R.A. Gerardin, N. Schmitt, J. Evrard, Alkali or Alkaline Earth Metal Ferrates, their Preparation and Their Industrial Applications, US Pat. 5284642, 1994.
12. Synthesizing alkali ferrates using a waste as a raw material10.1007/s11837-005-0166-2 ↗
13. Synthèse d’un sulfatoferrate de potassium et son efficacité dans le traitement des eaux, revue des sciences de l’eau
14. Cornell · 2003
15. Passivation of pure iron in alkaline solution containing silicate and sulphate – galvanostatic and potentiostatic studies10.1016/S0010-938X(98)00148-6 ↗
16. A PRDE study of the electrochemical behavior of iron in solutions containing silicate and sulphate at pH 10–1310.1016/S0010-938X(98)00149-8 ↗
17. Ex-situ and in-situ X-ray diffractions of corrosion products freshly formed on the surface of an iron–silicon alloy10.1016/j.corsci.2006.06.029 ↗
18. Dissolution of iron in concentrated alkali10.1016/S0022-0728(72)80377-2 ↗
19. Early steps in anodic oxidation of iron in aqueous solution10.5006/1.3580843 ↗
20. Electrochemical behaviour of iron in alkaline sulphate solutions10.1007/BF00608976 ↗
21. The potentiodynamic behaviour of iron in alkaline solutions10.1016/0013-4686(79)87026-7 ↗
22. On the interpretation of cyclic voltammograms of iron electrode in alkaline solution at elevated temperatures10.1016/0013-4686(85)80002-5 ↗
23. Electrochemical behavior of iron in alkaline solutions in the presence of silicate and sulfate10.5935/0103-5053.19950014 ↗
24. Mössbauer effect evidence of a ferrous sulphate layer in the structure of green rust 2 and its atmospheric oxidation10.1007/BF02398228 ↗
25. Evidence for the Fe(II)–Fe(III) green rust “Fougerite” mineral occurrence in hydromorphic soil10.1023/A:1010802508927 ↗
26. Influence of manganese on iron oxyhydroxides and oxides formed in aqueous solution10.1016/j.corsci.2007.08.020 ↗
27. Anodic dissolution of iron silicides in alkaline electrolyte10.1134/S0033173207010079 ↗
28. Electrochemical generation of ferrate Part 2: influence of anode composition10.1007/BF00683744 ↗
29. Comparison of pure and white cast iron dissolution kinetics in high alkaline electrolyte10.1016/S0010-938X(99)00036-0 ↗
30. Christina Clarkson Davis, Aqueous Silica in the Environment: Effects on Iron Hydroxide Surface Chemistry and Implications for Natural and Engineered Systems, Thesis, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, May 9, 2000.
31. Formation of a silico-iron(III) complex in dilute aqueous solution10.1016/0022-1902(65)80215-9 ↗
32. Chemical interactions of dissolved silica white iron (II) and (III)10.1002/j.1551-8833.1968.tb03534.x ↗
33. The interaction of anions and weak acids with the hydrous goethite (α-FeOOH) surface10.1016/0166-6622(81)80001-7 ↗
34. The removal of aqueous silica from dilute aqueous solution10.1016/0012-821X(75)90038-2 ↗
35. Zhang · 2001
36. Lehmann · 2002
37. Anisotropic etching of crystalline silicon in alkaline solutions. I. orientation dependence and behavior of passivation layers10.1149/1.2086277 ↗
38. Q.D. Nguyen, Electrochemistry in Anisotropic Etching of Silicon in Alkaline Solutions: A Kinematic Wave Analysis, Ph.D. Thesis, University of Twente, Enschede, The Netherlands, ISBN: 978-90-365-2551-0, Printed by Wohrmann Printservice, Zutphen, The Netherlands, Enschede, The Netherlands, 2007, p. 13.
39. Some effects of aqueous silica on the corrosion of iron10.1016/S0043-1354(02)00136-7 ↗
40. Effects of silicon on the crystallization and adsorption properties of ferric oxides10.1021/es00141a004 ↗
41. Formation and stability of iron(II) oxidation products under natural concentrations of dissolved silica10.1016/0043-1354(95)00265-0 ↗
42. In situ mössbauer study of the passive layer formed on the iron anode in alkaline electrolyte10.1135/cccc19992044 ↗
43. Effect of H2SO4 addition on the corrosion behaviour of AISI 304 austenitic stainless steel in methanol-HCl solution10.1016/S1452-3981(23)17078-7 ↗
44. On the stoichiometry and pourbaix diagram of Fe(II)–Fe(III) hydroxy-sulphate or sulphate-containing green rust 2: an electrochemical and Mössbauer spectroscopy study10.1016/S0010-938X(96)00072-8 ↗
45. A SERS investigation of the passive films formed on iron in mildly alkaline solutions of carbonate/bicarbonate and nitrate10.1016/0010-938X(94)00179-A ↗
46. Roberge · 2000
47. Mass-balance and Eh–pH diagrams of FeII–III green rust in aqueous sulphated solution10.1016/j.corsci.2006.01.002 ↗