Investigation of the specific adsorption of HSO4 -(SO4 2-) and Cl- ions on Co and Fe by radiotracer technique in the course of corrosion of the metals in perchlorate media

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23 Citations (Scopus)

Abstract

The adsorption of sulphate and chloride ions on Co and Fe was studied in 0.5 mol dm-3 NaClO4 supporting electrolyte at various pH values by radiotracer technique in the course of the corrosion (dissolution) of the metals. The effect of the reduction of ClO4 - ions (leading to the formation of Cl- ions) on the radiotracer measurements was investigated. It was found that the adsorption of chloride and sulphate ions occurs in different pH ranges. This phenomenon was explained by the assumption that the adsorption strength of the two species is very different on oxide covered and "pure" metal surfaces.

Original languageEnglish
Pages (from-to)1741-1749
Number of pages9
JournalCorrosion Science
Volume46
Issue number7
DOIs
Publication statusPublished - Jul 2004

Fingerprint

Metals
Ions
Corrosion
Adsorption
Sulfates
Chlorides
Oxides
Electrolytes
Dissolution
perchlorate

Keywords

  • Anion adsorption
  • Cobalt
  • Iron
  • Perchlorate reduction
  • Radiotracer study

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

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N2 - The adsorption of sulphate and chloride ions on Co and Fe was studied in 0.5 mol dm-3 NaClO4 supporting electrolyte at various pH values by radiotracer technique in the course of the corrosion (dissolution) of the metals. The effect of the reduction of ClO4 - ions (leading to the formation of Cl- ions) on the radiotracer measurements was investigated. It was found that the adsorption of chloride and sulphate ions occurs in different pH ranges. This phenomenon was explained by the assumption that the adsorption strength of the two species is very different on oxide covered and "pure" metal surfaces.

AB - The adsorption of sulphate and chloride ions on Co and Fe was studied in 0.5 mol dm-3 NaClO4 supporting electrolyte at various pH values by radiotracer technique in the course of the corrosion (dissolution) of the metals. The effect of the reduction of ClO4 - ions (leading to the formation of Cl- ions) on the radiotracer measurements was investigated. It was found that the adsorption of chloride and sulphate ions occurs in different pH ranges. This phenomenon was explained by the assumption that the adsorption strength of the two species is very different on oxide covered and "pure" metal surfaces.

KW - Anion adsorption

KW - Cobalt

KW - Iron

KW - Perchlorate reduction

KW - Radiotracer study

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