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High-Temperature Dry Sliding Wear Behavior Of Cold-Sprayed Inconel 738 Coating

Author

Listed:
  • B. V. PADMINI

    (Department of Mechanical Engineering, Sambhram Institute of Technology, Bengaluru 560097, Karnataka, India)

  • DIGVIJAY G. BHOSALE

    (��Department of Mechanical Engineering, Dr. D. Y. Patil Institute of Technology, Pune 411018, Maharashtra, India)

  • H. B. NIRANJAN

    (Department of Mechanical Engineering, Sambhram Institute of Technology, Bengaluru 560097, Karnataka, India)

  • MAHANTAYYA MATHAPATI

    (��Department of Mechanical Engineering, KLE College of Engineering and Technology, Chikodi 591201, Karnataka, India)

  • P. SAMPATHKUMARAN

    (Department of Mechanical Engineering, Sambhram Institute of Technology, Bengaluru 560097, Karnataka, India)

Abstract

This paper deals with the dry sliding wear behavior of cold-sprayed Inconel 738 (IN 738) coating up to 600∘ C. The coating was deposited by a high-pressure cold spray system using helium as the propellant on T11 low-carbon steel substrate. The dry sliding wear behavior of uncoated specimens is compared with IN 738 coating using pin-on-disk tribometer (ASTM G99). SEM, EDX, and XRD analyses provide better insights on the worn surface morphology, changes in oxide scales, and phase transformation. At 400∘C, the tribo-layer developed at the interface contains NiO, which is a lubricious oxide, which reduces the wear rate of the coating. With further increase in temperature up to 600∘C, there is a formation of a protective layer, which results in the enhancement of high-temperature dry sliding wear resistance of the coating. At 600∘C, sliding wear resistance offered by the coating is approximately four times higher than T11 low-carbon steel. Therefore, the developed cold-sprayed IN 738 has high potential for usage at elevated-temperature dry sliding applications.

Suggested Citation

  • B. V. Padmini & Digvijay G. Bhosale & H. B. Niranjan & Mahantayya Mathapati & P. Sampathkumaran, 2023. "High-Temperature Dry Sliding Wear Behavior Of Cold-Sprayed Inconel 738 Coating," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 30(02), pages 1-11, February.
    • Handle: RePEc:wsi:srlxxx:v:30:y:2023:i:02:n:s0218625x23500063
    DOI: 10.1142/S0218625X23500063
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