The influence of sulphide, bicarbonate and carbonate on the electrochemistry of carbon steel in slightly alkaline solutions
Source abstract
Abstract
Abstract The influence of sulphide on the electrochemistry of carbon steel in neutral to slightly alkaline sulphide solutions was investigated using electrochemical and surface analytical techniques. Small concentrations of sulphide were found to promote anodic dissolution as FeII carbonate complexes and to destabilize FeIII oxides leading to the loss of passivity, especially at pH ≤ 9. The dominant phase formed was mackinawite, while reactions between FeIII and sulphide led to the formation of oxidized S species (elemental Sand sulphate), polysulfides, and pyrite.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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