Increased lifetime for biomass and waste to energy power plant boilers with HVOF coatings: High temperature corrosion testing under chlorine-containing molten salt

Maria Oksa (Corresponding Author), Satu Tuurna, Tommi Varis

    Research output: Contribution to journalArticleScientificpeer-review

    30 Citations (Scopus)

    Abstract

    Heat exchanger surfaces of waste to energy and biomass power plant boilers experience often severe corrosion due to very aggressive components in the used fuels. High velocity oxy-fuel (HVOF) coatings offer excellent protection for boiler tubes against high temperature corrosion due to their high density and good adherence to the substrate material. Several thermal spray coatings with high chromium content were sprayed with HVOF technique. Their mechanical properties and high temperature corrosion resistance were tested and analyzed. The coating materials included NiCr, IN625, Ni-21Cr-10W-9Mo-4Cu, and iron-based partly amorphous alloy SHS9172 (Fe-25Cr-15W-12Nb-6Mo). High temperature corrosion testing was performed in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere at 575 and 625 °C. The corrosion test results of the coatings were compared to corrosion resistance of tube materials (X20, Alloy 263 and Sanicro 25).
    Original languageEnglish
    Pages (from-to)783-796
    Number of pages14
    JournalJournal of Thermal Spray Technology
    Volume22
    Issue number5
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    molten salts
    Chlorine
    boilers
    power plants
    biomass
    chlorine
    Boilers
    Molten materials
    corrosion
    Power plants
    Biomass
    Salts
    Corrosion
    coatings
    life (durability)
    Coatings
    Testing
    corrosion resistance
    Corrosion resistance
    tubes

    Keywords

    • biofuel
    • CJS
    • coating characteristics
    • corrosion protection coating
    • high temperature corrosion
    • HVOF
    • molten salt
    • process optimization
    • waste to energy

    Cite this

    @article{aead4023a1ca4c8eb4122a6e2fcbc727,
    title = "Increased lifetime for biomass and waste to energy power plant boilers with HVOF coatings: High temperature corrosion testing under chlorine-containing molten salt",
    abstract = "Heat exchanger surfaces of waste to energy and biomass power plant boilers experience often severe corrosion due to very aggressive components in the used fuels. High velocity oxy-fuel (HVOF) coatings offer excellent protection for boiler tubes against high temperature corrosion due to their high density and good adherence to the substrate material. Several thermal spray coatings with high chromium content were sprayed with HVOF technique. Their mechanical properties and high temperature corrosion resistance were tested and analyzed. The coating materials included NiCr, IN625, Ni-21Cr-10W-9Mo-4Cu, and iron-based partly amorphous alloy SHS9172 (Fe-25Cr-15W-12Nb-6Mo). High temperature corrosion testing was performed in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere at 575 and 625 °C. The corrosion test results of the coatings were compared to corrosion resistance of tube materials (X20, Alloy 263 and Sanicro 25).",
    keywords = "biofuel, CJS, coating characteristics, corrosion protection coating, high temperature corrosion, HVOF, molten salt, process optimization, waste to energy",
    author = "Maria Oksa and Satu Tuurna and Tommi Varis",
    year = "2013",
    doi = "10.1007/s11666-013-9928-5",
    language = "English",
    volume = "22",
    pages = "783--796",
    journal = "Journal of Thermal Spray Technology",
    issn = "1059-9630",
    publisher = "Springer",
    number = "5",

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    Increased lifetime for biomass and waste to energy power plant boilers with HVOF coatings : High temperature corrosion testing under chlorine-containing molten salt. / Oksa, Maria (Corresponding Author); Tuurna, Satu; Varis, Tommi.

    In: Journal of Thermal Spray Technology, Vol. 22, No. 5, 2013, p. 783-796.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Increased lifetime for biomass and waste to energy power plant boilers with HVOF coatings

    T2 - High temperature corrosion testing under chlorine-containing molten salt

    AU - Oksa, Maria

    AU - Tuurna, Satu

    AU - Varis, Tommi

    PY - 2013

    Y1 - 2013

    N2 - Heat exchanger surfaces of waste to energy and biomass power plant boilers experience often severe corrosion due to very aggressive components in the used fuels. High velocity oxy-fuel (HVOF) coatings offer excellent protection for boiler tubes against high temperature corrosion due to their high density and good adherence to the substrate material. Several thermal spray coatings with high chromium content were sprayed with HVOF technique. Their mechanical properties and high temperature corrosion resistance were tested and analyzed. The coating materials included NiCr, IN625, Ni-21Cr-10W-9Mo-4Cu, and iron-based partly amorphous alloy SHS9172 (Fe-25Cr-15W-12Nb-6Mo). High temperature corrosion testing was performed in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere at 575 and 625 °C. The corrosion test results of the coatings were compared to corrosion resistance of tube materials (X20, Alloy 263 and Sanicro 25).

    AB - Heat exchanger surfaces of waste to energy and biomass power plant boilers experience often severe corrosion due to very aggressive components in the used fuels. High velocity oxy-fuel (HVOF) coatings offer excellent protection for boiler tubes against high temperature corrosion due to their high density and good adherence to the substrate material. Several thermal spray coatings with high chromium content were sprayed with HVOF technique. Their mechanical properties and high temperature corrosion resistance were tested and analyzed. The coating materials included NiCr, IN625, Ni-21Cr-10W-9Mo-4Cu, and iron-based partly amorphous alloy SHS9172 (Fe-25Cr-15W-12Nb-6Mo). High temperature corrosion testing was performed in NaCl-KCl-Na2SO4 salt with controlled H2O atmosphere at 575 and 625 °C. The corrosion test results of the coatings were compared to corrosion resistance of tube materials (X20, Alloy 263 and Sanicro 25).

    KW - biofuel

    KW - CJS

    KW - coating characteristics

    KW - corrosion protection coating

    KW - high temperature corrosion

    KW - HVOF

    KW - molten salt

    KW - process optimization

    KW - waste to energy

    U2 - 10.1007/s11666-013-9928-5

    DO - 10.1007/s11666-013-9928-5

    M3 - Article

    VL - 22

    SP - 783

    EP - 796

    JO - Journal of Thermal Spray Technology

    JF - Journal of Thermal Spray Technology

    SN - 1059-9630

    IS - 5

    ER -