Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)

S. Sroda (Corresponding Author), Satu Tuurna

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.
    Original languageEnglish
    Pages (from-to)244-251
    Number of pages8
    JournalMaterials and Corrosion
    Volume57
    Issue number3
    DOIs
    Publication statusPublished - 2006
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Boilers
    corrosion
    combustion
    Corrosion
    oxidation
    Oxidation
    atmosphere
    Ferritic steel
    Spectrometers
    spectrometer
    Electron microscopes
    steel
    Scanning
    electron
    Austenitic steel
    Surface reactions
    Sulfides
    Phase composition
    Oxides
    diffraction

    Keywords

    • combustion environment
    • active oxidation
    • HCl
    • SO2
    • exposure tests
    • austenitic stainless steels
    • ferritic steels
    • SEM
    • EDS
    • XRD

    Cite this

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    title = "Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)",
    abstract = "Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8{\%} O2‐15{\%} H2O, N2‐8{\%} O2‐15{\%} H2O‐2000 vppm HCl and N2‐8{\%} O2‐15{\%} H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.",
    keywords = "combustion environment, active oxidation, HCl, SO2, exposure tests, austenitic stainless steels, ferritic steels, SEM, EDS, XRD",
    author = "S. Sroda and Satu Tuurna",
    note = "Project code: H1SU00900",
    year = "2006",
    doi = "10.1002/maco.200503931",
    language = "English",
    volume = "57",
    pages = "244--251",
    journal = "Materials and Corrosion",
    issn = "0947-5117",
    publisher = "Wiley",
    number = "3",

    }

    Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR). / Sroda, S. (Corresponding Author); Tuurna, Satu.

    In: Materials and Corrosion, Vol. 57, No. 3, 2006, p. 244-251.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)

    AU - Sroda, S.

    AU - Tuurna, Satu

    N1 - Project code: H1SU00900

    PY - 2006

    Y1 - 2006

    N2 - Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.

    AB - Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.

    KW - combustion environment

    KW - active oxidation

    KW - HCl

    KW - SO2

    KW - exposure tests

    KW - austenitic stainless steels

    KW - ferritic steels

    KW - SEM

    KW - EDS

    KW - XRD

    U2 - 10.1002/maco.200503931

    DO - 10.1002/maco.200503931

    M3 - Article

    VL - 57

    SP - 244

    EP - 251

    JO - Materials and Corrosion

    JF - Materials and Corrosion

    SN - 0947-5117

    IS - 3

    ER -