Effect of chloride and sulfate additions on corrosion of low alloy steel in high-temperature water

Konsta Sipilä, Martin Bojinov (Corresponding Author), Wolfgang Mayinger, Timo Saario, Michael Stanislowski

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

The present paper investigates the effect of chloride and sulfate additions on corrosion of low-alloyed steel in a cladding flaw of a nuclear reactor pressure vessel using in-situ electrochemical impedance spectroscopy coupled to ex-situ characterization of the oxides by surface analytical techniques. Impedance data are interpreted by the mixed-conduction model for oxide films to yield estimates for the main kinetic and transport parameters of the corrosion process. It can be concluded that the effect of chloride/sulfate transients on low-alloyed steel oxides is moderate, concerns mostly the processes at the inner layer/coolant interface and is to a certain extent reversible.
Original languageEnglish
Pages (from-to)757-770
JournalElectrochimica Acta
Volume173
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Steel
High strength steel
Oxides
Sulfates
Chlorides
Corrosion
Water
Nuclear reactors
Pressure vessels
Electrochemical impedance spectroscopy
Coolants
Oxide films
Temperature
Defects
Kinetics

Keywords

  • low-alloyed steel
  • high-tempereature water
  • chloride and sulfate additions
  • impedance spectroscopy
  • kinetic model

Cite this

Sipilä, Konsta ; Bojinov, Martin ; Mayinger, Wolfgang ; Saario, Timo ; Stanislowski, Michael. / Effect of chloride and sulfate additions on corrosion of low alloy steel in high-temperature water. In: Electrochimica Acta. 2015 ; Vol. 173. pp. 757-770.
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Effect of chloride and sulfate additions on corrosion of low alloy steel in high-temperature water. / Sipilä, Konsta; Bojinov, Martin (Corresponding Author); Mayinger, Wolfgang; Saario, Timo; Stanislowski, Michael.

In: Electrochimica Acta, Vol. 173, 2015, p. 757-770.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of chloride and sulfate additions on corrosion of low alloy steel in high-temperature water

AU - Sipilä, Konsta

AU - Bojinov, Martin

AU - Mayinger, Wolfgang

AU - Saario, Timo

AU - Stanislowski, Michael

PY - 2015

Y1 - 2015

N2 - The present paper investigates the effect of chloride and sulfate additions on corrosion of low-alloyed steel in a cladding flaw of a nuclear reactor pressure vessel using in-situ electrochemical impedance spectroscopy coupled to ex-situ characterization of the oxides by surface analytical techniques. Impedance data are interpreted by the mixed-conduction model for oxide films to yield estimates for the main kinetic and transport parameters of the corrosion process. It can be concluded that the effect of chloride/sulfate transients on low-alloyed steel oxides is moderate, concerns mostly the processes at the inner layer/coolant interface and is to a certain extent reversible.

AB - The present paper investigates the effect of chloride and sulfate additions on corrosion of low-alloyed steel in a cladding flaw of a nuclear reactor pressure vessel using in-situ electrochemical impedance spectroscopy coupled to ex-situ characterization of the oxides by surface analytical techniques. Impedance data are interpreted by the mixed-conduction model for oxide films to yield estimates for the main kinetic and transport parameters of the corrosion process. It can be concluded that the effect of chloride/sulfate transients on low-alloyed steel oxides is moderate, concerns mostly the processes at the inner layer/coolant interface and is to a certain extent reversible.

KW - low-alloyed steel

KW - high-tempereature water

KW - chloride and sulfate additions

KW - impedance spectroscopy

KW - kinetic model

U2 - 10.1016/j.electacta.2015.05.137

DO - 10.1016/j.electacta.2015.05.137

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JO - Electrochimica Acta

JF - Electrochimica Acta

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