IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v27y2020i07ns0218625x19501683.html
   My bibliography  Save this article

COMPARISON OF HOT CORROSION PERFORMANCE OF BARE AND NiCoCrAlY-COATED AUSTENITIC STAINLESS STEEL AISI 347 IN AGGRESSIVE WASTE HEAT INCINERATOR ENVIRONMENT AT 650∘C

Author

Listed:
  • S. M. MUTHU

    (School of Mechanical Engineering, VIT, Vellore-632014, India)

  • R. V. ANANT

    (School of Mechanical Engineering, VIT, Vellore-632014, India)

  • D. RAGHUL

    (School of Mechanical Engineering, VIT, Vellore-632014, India)

  • M. ISHWARYA

    (#x2020;Central Institution of Plastic Engineering and Technology, Chennai-600032, India)

  • N. ARIVAZHAGAN

    (School of Mechanical Engineering, VIT, Vellore-632014, India)

  • M. ARIVARASU

    (#x2020;Central Institution of Plastic Engineering and Technology, Chennai-600032, India‡Centre for Innovative Manufacturing Research, VIT, Vellore-632014, India)

Abstract

The hot corrosion behavior of bare and NiCoCrAlY-coated AISI 347 steel is investigated in Na2SO4-40%K2SO4-10%NaCl-10%KCl salt atmosphere at 650∘C for 10 cycles. Each cycle contains 5h heating and 30min cooling to ambient temperature. The NiCoCrAlY coating is employed on the austenitic stainless steel AISI 347 using high-velocity oxy-fuel (HVOF) coating method. Corrosion kinetics of the hot corroded steels are determined by thermo-gravimetric technique. The surface microstructures and compositions of the coating and corrosion products of the steels are characterized using a scanning electron microscope and energy dispersive spectroscopy. The phases of the coating are analyzed using X-ray diffraction method. Higher weight gain is observed on the uncoated specimen, and more oxide scale spallation is observed due to Fe2O3 oxide layer formation. In the coated specimen, there is no spallation of any oxide scales. The coating provides the resistance to the spallation of oxide scales. The EDS point analysis and elemental mapping analysis are performed on the cross-section to analyze the distribution of corrosion products with respect to depth.

Suggested Citation

  • S. M. Muthu & R. V. Anant & D. Raghul & M. Ishwarya & N. Arivazhagan & M. Arivarasu, 2020. "COMPARISON OF HOT CORROSION PERFORMANCE OF BARE AND NiCoCrAlY-COATED AUSTENITIC STAINLESS STEEL AISI 347 IN AGGRESSIVE WASTE HEAT INCINERATOR ENVIRONMENT AT 650∘C," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(07), pages 1-15, July.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:07:n:s0218625x19501683
    DOI: 10.1142/S0218625X19501683
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X19501683
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X19501683?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:27:y:2020:i:07:n:s0218625x19501683. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.