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Friction and Adhesive Wear Study of HVOF Sprayed Ni–WC–Co-Based Powder Coating

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Powder Metallurgy and Metal Ceramics Aims and scope

Ni-based alloys are being widely used to improve the wear resistance of various industrial components in normal and severe environments and addition of rare earth elements to these alloys further improves the various mechanical and tribological properties of the coatings. In the present work, commercially available MEC 86 (NiCrBSi/WC–Co = 65/35) powder was modified with the optimum addition of 0.4 wt.% La2O3. The coatings were deposited by high velocity oxy-fuel (HVOF) spraying process. Rare earth addition refines the microstructure and increases the microhardness of the coatings. The increase in microhardness with the addition of La2O3 is approximately 22%. Sliding wear resistance of the coating modified with La2O3 is higher than of that without La2O3. The average wear resistance increases by approximately 14%. Further, the addition of La2O3 to the coating reduces the friction coefficient as compared to the one without the rare earth element. The coefficient of friction was found lower with the addition of La2O3, which is approximately 18%.

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Authors and Affiliations

  1. Research Scholar, Mechanical Engineering, School of Engineering, Gautam Buddha University, Greater Noida, India

    Sushil Kumar

  2. G.L. Bajaj Institute of Engineering and Technology, Research Scholar, Mechanical Engineering, School of Engineering, Gautam Buddha University, Greater Noida, India

    Shashi Prakash Dwivedi

  3. Faculty Mechanical Engineering, Guatma Buddha University, Greater Noida, India

    Satpal Sharma

Authors
  1. Sushil Kumar
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  2. Shashi Prakash Dwivedi
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  3. Satpal Sharma
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Correspondence to Satpal Sharma.

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Published in Poroshkova Metallurgiya, Vol. 57, Nos. 5–6 (521), pp. 102–110, 2018.

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Kumar, S., Dwivedi, S.P. & Sharma, S. Friction and Adhesive Wear Study of HVOF Sprayed Ni–WC–Co-Based Powder Coating. Powder Metall Met Ceram 57, 329–335 (2018). https://doi.org/10.1007/s11106-018-9987-8

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  • DOI: https://doi.org/10.1007/s11106-018-9987-8

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