IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v30y2023i09ns0218625x23300095.html
   My bibliography  Save this article

A COMPREHENSIVE REVIEW ON COMBATING THE ELEVATED-TEMPERATURE SURFACE DEGRADATION BY MCrAlX COATINGS

Author

Listed:
  • GAURAV PRASHAR

    (Department of Mechanical Engineering, Rayat Bahra Institute of Engineering and Nanotechnology, Hoshiarpur, Punjab, India)

  • HITESH VASUDEV

    (��School of Mechanical Engineering, Lovely Professional University, Phagwara 144411, Punjab, India‡Division of Research and Development, Lovely Professional University, Phagwara 144411, Punjab, India)

Abstract

Surface degradation (oxidation/corrosion/erosion) at elevated temperature is encountered commonly in engineering industries like gas turbines and thermal power plants. MCrAlX coatings which came into the picture in 1960s were used widely for surface protection in the elevated-temperature section of the gas turbine engines and in boilers to combat oxidation/corrosion/erosion. Among them, MCrAlY (M=Ni, Co or Co+Ni) were developed to be used as the overlay coatings and bond coat (BC), which offer a combination of multiple features such as oxidation, corrosion and ductility. MCrAlY coatings form a second layer of aluminum oxide beneath the chromium oxide layer at elevated temperatures which minimizes the oxidation/corrosion/erosive wear rates. But the desire to increase combustion efficiencies of power plants and gas turbine engines along with lower CO2 emissions poses a significant challenge for coating design. As the temperature surpasses 900∘C, NiCrAlY coating degrades quickly due to nonregeneration of chromia or alumina. The research and development (R&D) efforts are focusing continuously on improving the existing MCrAlX coatings or developing new sustainable MCrAlX coatings with improved oxidation performance. In this review, the roles of the alloying elements, microstructures, post-deposition treatment techniques and different deposition processes in the elevated-temperature oxidation/corrosion performance of MCrAlX-based alloys have been explored in detail.

Suggested Citation

  • Gaurav Prashar & Hitesh Vasudev, 2023. "A COMPREHENSIVE REVIEW ON COMBATING THE ELEVATED-TEMPERATURE SURFACE DEGRADATION BY MCrAlX COATINGS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 30(09), pages 1-28, September.
    • Handle: RePEc:wsi:srlxxx:v:30:y:2023:i:09:n:s0218625x23300095
    DOI: 10.1142/S0218625X23300095
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X23300095
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X23300095?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:30:y:2023:i:09:n:s0218625x23300095. 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.