PASSIVATION AND SPONTANEOUS DISSOLUTION OF IRON IN 95% ACETIC ACID IN THE PRESENCE OF OXYGEN.

G. N. Markos'yan, L. Sziraki, A. I. Molodov, M. L. Varsanyi, V. V. Losev, J. Jaen, A. Vertes, L. Kiss

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Abstract

It is shown by electrochemical measurements, radiometry, spectrophotometry, and the analysis of Moessbauer spectra obtained by the conversion-electron technique that iron undergoes oxygen passivation when polarized anodically in deaerated 95% HAc plus 0. 5 M NaAc solution, while salt passivation by iron acetates occurs in the presence of oxygen, both during corrosion and during anodic polarization, involving the reactions Fe yields Fe(II) plus 2e, Fe(II) left bracket in oxygen right bracket yields Fe(III) and Fe(III) plus e yields Fe(II). Salt precipitation depresses the corrosion rate as a function of time.

Original languageEnglish
Pages (from-to)193-201
Number of pages9
JournalSoviet electrochemistry
Volume22
Issue number2
Publication statusPublished - Feb 1 1986

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Markos'yan, G. N., Sziraki, L., Molodov, A. I., Varsanyi, M. L., Losev, V. V., Jaen, J., Vertes, A., & Kiss, L. (1986). PASSIVATION AND SPONTANEOUS DISSOLUTION OF IRON IN 95% ACETIC ACID IN THE PRESENCE OF OXYGEN. Soviet electrochemistry, 22(2), 193-201.