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.
|Number of pages||9|
|Publication status||Published - Feb 1 1986|
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