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Effect Of Embedded Tungsten Particles On Impact Resistance Of Diamond Coating

Author

Listed:
  • NAICHAO CHEN

    (School Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China†Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai 200090, P. R. China)

  • DONGMEI LIU

    (School Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China)

  • FAN ZHOU

    (School Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China)

  • PING HE

    (School Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China)

  • MUSEN LIU

    (School Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China)

Abstract

For diamond coating, natural fragile property easily leads to fracture, delamination and peeling, which seriously inhibits the applications in many industrial fields. In order to prolong the lifetime, improving the toughness under impact load is essential for diamond coating. In this work, a novel method was proposed by the conventional CVD diamond technique combining with the particles, with which the nanocrystalline diamond (NCD) coating with W particles (W-NCD) was fabricated to evaluate the impact behavior. The pure NCD coating was also produced for comparison. Repeating impact testing was performed to evaluate the impact resistance of the as-deposited NCD coatings. The results showed that the diamond coating can be fabricated on the substrate with W particles. The indentation scar revealed that the W-NCD coating had the stronger impact resistance than the NCD coating. Ratcheting effect was employed to discuss the impact properties of NCD coating for the first time. The coating integrity played a vital role in ratcheting displacement. Repeating impact can make the NCD and W-NCD coatings soft, and the W particles can accelerate the softening process. Hence, embedding particles can provide a potential and valid method to enhance the impact resistance of diamond coating that was very important for the fragile coating.

Suggested Citation

  • Naichao Chen & Dongmei Liu & Fan Zhou & Ping He & Musen Liu, 2021. "Effect Of Embedded Tungsten Particles On Impact Resistance Of Diamond Coating," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(11), pages 1-12, November.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:11:n:s0218625x21501080
    DOI: 10.1142/S0218625X21501080
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