Electrochemical studies of anodic dissolution of mild steel in a carbonate-bicarbonate buffer under erosion-corrosion conditions

S Zhou, M M Stack, R C Newman

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

A Rotating Cylinder Electrode (RCE) system has been used to determine the corrosion kinetics of mild steel in the active dissolution potential range under erosion-corrosion conditions. The hydrodynamics of the rotating cylinder electrode were characterized by the mass transfer controlled oxygen reduction reaction on a copper electrode. The anodic dissolution current was measured at various potentials and velocities in de-aerated 0.5M NaHCO3 + 0.5M Na2CO3 solution, with or without the addition of 300 g/l of 100 mu m alumina. The results show that anodic dissolution processes in this system are under mass transfer control in turbulent flow conditions. The anodic dissolution rate increases significantly with the introduction of particles, owing to an increase of mass transfer coefficient and removal of corrosion deposits on the electrode surface.

LanguageEnglish
Pages1071-1084
Number of pages14
JournalCorrosion Science
Volume38
Issue number7
DOIs
Publication statusPublished - Jul 1996

Fingerprint

Carbonates
Bicarbonates
Carbon steel
Erosion
Buffers
Dissolution
Corrosion
Electrodes
Mass transfer
Aluminum Oxide
Engine cylinders
Turbulent flow
Copper
Alumina
Deposits
Hydrodynamics
Oxygen
Kinetics

Keywords

  • mild steel
  • erosion
  • RDE/RCE
  • rotating cylinder electrode
  • slurry pipelines
  • mass-transfer
  • iron
  • passivation
  • electrodissolution

Cite this

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abstract = "A Rotating Cylinder Electrode (RCE) system has been used to determine the corrosion kinetics of mild steel in the active dissolution potential range under erosion-corrosion conditions. The hydrodynamics of the rotating cylinder electrode were characterized by the mass transfer controlled oxygen reduction reaction on a copper electrode. The anodic dissolution current was measured at various potentials and velocities in de-aerated 0.5M NaHCO3 + 0.5M Na2CO3 solution, with or without the addition of 300 g/l of 100 mu m alumina. The results show that anodic dissolution processes in this system are under mass transfer control in turbulent flow conditions. The anodic dissolution rate increases significantly with the introduction of particles, owing to an increase of mass transfer coefficient and removal of corrosion deposits on the electrode surface.",
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Electrochemical studies of anodic dissolution of mild steel in a carbonate-bicarbonate buffer under erosion-corrosion conditions. / Zhou, S ; Stack, M M ; Newman, R C .

In: Corrosion Science, Vol. 38, No. 7, 07.1996, p. 1071-1084.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrochemical studies of anodic dissolution of mild steel in a carbonate-bicarbonate buffer under erosion-corrosion conditions

AU - Zhou, S

AU - Stack, M M

AU - Newman, R C

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Y1 - 1996/7

N2 - A Rotating Cylinder Electrode (RCE) system has been used to determine the corrosion kinetics of mild steel in the active dissolution potential range under erosion-corrosion conditions. The hydrodynamics of the rotating cylinder electrode were characterized by the mass transfer controlled oxygen reduction reaction on a copper electrode. The anodic dissolution current was measured at various potentials and velocities in de-aerated 0.5M NaHCO3 + 0.5M Na2CO3 solution, with or without the addition of 300 g/l of 100 mu m alumina. The results show that anodic dissolution processes in this system are under mass transfer control in turbulent flow conditions. The anodic dissolution rate increases significantly with the introduction of particles, owing to an increase of mass transfer coefficient and removal of corrosion deposits on the electrode surface.

AB - A Rotating Cylinder Electrode (RCE) system has been used to determine the corrosion kinetics of mild steel in the active dissolution potential range under erosion-corrosion conditions. The hydrodynamics of the rotating cylinder electrode were characterized by the mass transfer controlled oxygen reduction reaction on a copper electrode. The anodic dissolution current was measured at various potentials and velocities in de-aerated 0.5M NaHCO3 + 0.5M Na2CO3 solution, with or without the addition of 300 g/l of 100 mu m alumina. The results show that anodic dissolution processes in this system are under mass transfer control in turbulent flow conditions. The anodic dissolution rate increases significantly with the introduction of particles, owing to an increase of mass transfer coefficient and removal of corrosion deposits on the electrode surface.

KW - mild steel

KW - erosion

KW - RDE/RCE

KW - rotating cylinder electrode

KW - slurry pipelines

KW - mass-transfer

KW - iron

KW - passivation

KW - electrodissolution

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