High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt

Maria Oksa, Satu Tuurna, Tommi Varis

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Thermal spray coatings can be used for high temperature corrosion protection of heat exchanger surfaces in power plant boilers. In this study, several thermal spray coatings with high chromium content were manufactured with HVOF (high velocity oxy-fuel) technique, and their mechanical properties and high temperature corrosion resistance were tested and analysed. The coating materials included NiCr, IN625 and iron based steel alloy with a nanoscale microstructure Nanosteel SHS9172. High temperature corrosion testing was made in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere, in temperatures 575 and 625 C. The effect of coating process and following characteristics of the coatings on high temperature corrosion protection properties was analysed. The corrosion test results of the coatings were compared to corrosion resistance of bulk materials (X20, Alloy 263 and Sanicro 25)
    Original languageEnglish
    Title of host publicationEuropean Corrosion Congress (EUROCORR 2012)
    Subtitle of host publicationSafer World Through Better Corrosion Control
    PublisherEuropean Federation of Corrosion EFC
    Number of pages12
    ISBN (Print)978-1-5108-3592-4
    Publication statusPublished - 2012
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventEuropean Corrosion Congress Eurocorr 2012 - Istanbul, Turkey
    Duration: 9 Sep 201213 Sep 2012

    Conference

    ConferenceEuropean Corrosion Congress Eurocorr 2012
    Abbreviated titleEurocorr 2012
    CountryTurkey
    CityIstanbul
    Period9/09/1213/09/12

    Fingerprint

    Corrosion resistance
    Salts
    Coatings
    Corrosion protection
    Temperature
    Corrosion
    Alloy steel
    Heat exchangers
    Boilers
    Chromium
    Power plants
    Protective atmospheres
    Iron
    Mechanical properties
    Microstructure
    Testing
    Hot Temperature

    Keywords

    • High temperature corrosion
    • coating
    • thermal spray
    • HVOF
    • biomass

    Cite this

    Oksa, M., Tuurna, S., & Varis, T. (2012). High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt. In European Corrosion Congress (EUROCORR 2012) : Safer World Through Better Corrosion Control European Federation of Corrosion EFC.
    Oksa, Maria ; Tuurna, Satu ; Varis, Tommi. / High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt. European Corrosion Congress (EUROCORR 2012) : Safer World Through Better Corrosion Control . European Federation of Corrosion EFC, 2012.
    @inproceedings{60f05e0169784a258b7770ec253885fe,
    title = "High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt",
    abstract = "Thermal spray coatings can be used for high temperature corrosion protection of heat exchanger surfaces in power plant boilers. In this study, several thermal spray coatings with high chromium content were manufactured with HVOF (high velocity oxy-fuel) technique, and their mechanical properties and high temperature corrosion resistance were tested and analysed. The coating materials included NiCr, IN625 and iron based steel alloy with a nanoscale microstructure Nanosteel SHS9172. High temperature corrosion testing was made in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere, in temperatures 575 and 625 C. The effect of coating process and following characteristics of the coatings on high temperature corrosion protection properties was analysed. The corrosion test results of the coatings were compared to corrosion resistance of bulk materials (X20, Alloy 263 and Sanicro 25)",
    keywords = "High temperature corrosion, coating, thermal spray, HVOF, biomass",
    author = "Maria Oksa and Satu Tuurna and Tommi Varis",
    note = "Project code: 37397",
    year = "2012",
    language = "English",
    isbn = "978-1-5108-3592-4",
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    publisher = "European Federation of Corrosion EFC",

    }

    Oksa, M, Tuurna, S & Varis, T 2012, High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt. in European Corrosion Congress (EUROCORR 2012) : Safer World Through Better Corrosion Control . European Federation of Corrosion EFC, European Corrosion Congress Eurocorr 2012, Istanbul, Turkey, 9/09/12.

    High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt. / Oksa, Maria; Tuurna, Satu; Varis, Tommi.

    European Corrosion Congress (EUROCORR 2012) : Safer World Through Better Corrosion Control . European Federation of Corrosion EFC, 2012.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    TY - GEN

    T1 - High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt

    AU - Oksa, Maria

    AU - Tuurna, Satu

    AU - Varis, Tommi

    N1 - Project code: 37397

    PY - 2012

    Y1 - 2012

    N2 - Thermal spray coatings can be used for high temperature corrosion protection of heat exchanger surfaces in power plant boilers. In this study, several thermal spray coatings with high chromium content were manufactured with HVOF (high velocity oxy-fuel) technique, and their mechanical properties and high temperature corrosion resistance were tested and analysed. The coating materials included NiCr, IN625 and iron based steel alloy with a nanoscale microstructure Nanosteel SHS9172. High temperature corrosion testing was made in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere, in temperatures 575 and 625 C. The effect of coating process and following characteristics of the coatings on high temperature corrosion protection properties was analysed. The corrosion test results of the coatings were compared to corrosion resistance of bulk materials (X20, Alloy 263 and Sanicro 25)

    AB - Thermal spray coatings can be used for high temperature corrosion protection of heat exchanger surfaces in power plant boilers. In this study, several thermal spray coatings with high chromium content were manufactured with HVOF (high velocity oxy-fuel) technique, and their mechanical properties and high temperature corrosion resistance were tested and analysed. The coating materials included NiCr, IN625 and iron based steel alloy with a nanoscale microstructure Nanosteel SHS9172. High temperature corrosion testing was made in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere, in temperatures 575 and 625 C. The effect of coating process and following characteristics of the coatings on high temperature corrosion protection properties was analysed. The corrosion test results of the coatings were compared to corrosion resistance of bulk materials (X20, Alloy 263 and Sanicro 25)

    KW - High temperature corrosion

    KW - coating

    KW - thermal spray

    KW - HVOF

    KW - biomass

    M3 - Conference article in proceedings

    SN - 978-1-5108-3592-4

    BT - European Corrosion Congress (EUROCORR 2012)

    PB - European Federation of Corrosion EFC

    ER -

    Oksa M, Tuurna S, Varis T. High temperature corrosion resistance of HVOF coatings in a NaCl-KCl-Na2SO4 salt. In European Corrosion Congress (EUROCORR 2012) : Safer World Through Better Corrosion Control . European Federation of Corrosion EFC. 2012