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RESEARCH ON TRIBOLOGICAL BEHAVIOR OF Cr3C2-25NiCr-COATED BRAKE DISC

Author

Listed:
  • HALÄ°L KILIÇ

    (Department of Machine, Technical Sciences Vocational School, Kırklareli University, Kırklareli, Turkey)

  • CENK MISIRLI

    (Department of Mechanical Engineering, Trakya University, Edirne, Turkey)

Abstract

This research presents the results of a comparative study to determine the friction and wear behavior of the high-velocity oxygen fuel (HVOF)-sprayed Cr3C2-25NiCr-coated brake disc. The friction and wear behavior of Cr3C2-25NiCr-coated brake disc (CD) and the sliding against the commercial brake pad were examined on a laboratory-scale disc-pad dynamometer and the findings were compared with those of reference brake disc (UCD). The coating was deposited by means of the HVOF process on a grey cast iron (GCI) substrate. Braking tests were performed according to the SAE-J2430 test standard. The as-sprayed coating was characterized for their microstructure and phase constitution by SEM/EDS and XRD. The results reveal that the coefficient of friction (COF) of CD and UCD varies between 0.42–0.57 and 0.44–0.62, respectively. The Cr3C2-25NiCr-coated brake disc was found to have exhibited a comparable COF and lower wear loss to the reference brake disc. The addition of a ceramic phase to the brake disc coating played an important role in reducing the COF to an acceptable range and improving the sliding wear resistance of the brake pair.

Suggested Citation

  • Halä°L Kili㇠& Cenk Misirli, 2021. "RESEARCH ON TRIBOLOGICAL BEHAVIOR OF Cr3C2-25NiCr-COATED BRAKE DISC," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(10), pages 1-11, October.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:10:n:s0218625x21500979
    DOI: 10.1142/S0218625X21500979
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