Tribological performance of novel Nickel-based composite coatings with lubricant particles

I. Tudela, Andrew Cobley, Zhang Yi

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    ABSTRACT: The present study is focused on the evaluation of the tribological
    performance of novel Ni/hBN and Ni/WS2 composite coatings electrodeposited from an additive-free Watts bath with the assistance of ultrasound. Lubricated and non lubricated scratch tests were performed on both novel composite coatings and on standard Ni deposits used as a benchmark coating to have an initial idea of the effect of the presence of particles within the Ni matrix. Under lubricated conditions, the performance of the Ni/hBN composite coating was very similar to the benchmark Ni coating, whereas the Ni/WS2 behave quite differently, as the latter did not only show a lower coefficient of friction, but also prevented the occurrence of stick-slip motion that was clearly observed in the other coatings. Under non-lubricated conditions, whereas the tribological performance of the Ni/hBN composite coating was again very similar to that of the benchmark Ni coating, the Ni/WS2 composite coatings again showed a
    remarkable enhancement, as the incorporation of the WS2 particles into the Ni coating not only resulted in a lower coefficient of friction, but also in the prevention of coating failure.
    Original languageEnglish
    Pages (from-to)169–180
    Number of pages12
    Issue number2
    Early online date28 Jul 2018
    Publication statusPublished - Apr 2019


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    • composite coatings
    • hexagonal boron nitride
    • nickel
    • solid lubricant
    • tribology
    • tungsten disulphide

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Surfaces, Coatings and Films

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