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    Novel electrodeposited Ni-B/Y 2 O 3 composite coatings with improved properties

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    coatings-07-00161.pdf (567.1Kb)
    Date
    2017
    Author
    Shakoor, Rana Abdul
    Waware, Umesh Somaji
    Ali, Kamran
    Kahraman, Ramazan
    Popelka, Anton
    Yusuf, Moinuddin Mohammed
    Hasan, Anwarul
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    Abstract
    Ni-B/Y 2 O 3 composite coatings were developed through an electrodeposition process to study the effect of addition of Y 2 O 3 particles on structure, surface, thermal, mechanical, and anticorrosion properties of Ni-B coatings. It is revealed that parent crystal structure of Ni-B matrix is preserved by addition of Y 2 O 3 , however, a noticeable improvement in crystallinity is observed. The analysis of the surface exhibits formation of dense and nodular deposits in the two types of coatings, but incorporation of Y 2 O 3 particles in Ni-B matrix has resulted in a noteworthy change in grain size and surface roughness. Thermal analysis of the surfaces indicates that Ni-B-Y 2 O 3 composite coatings demonstrate superior thermal stability compared to Ni-B coatings. The nanoindentation analysis shows a significant enhancement in the mechanical characteristics of the Ni-B matrix by addition of Y 2 O 3 particles. This may be contemplated as the result of grain refinement and dispersion hardening of the Ni-B matrix by the presence of hard Y 2 O 3 particles. A decent improvement in the corrosion protection efficiency (73.6%) is also observed by addition of Y 2 O 3 particles into Ni-B matrix. Simultaneous improvement of mechanical and anticorrosion properties suggests potential applications of Ni-B-Y 2 O 3 coatings in oil and gas, automobile, and many other industries. 1 2017 by the authors.
    DOI/handle
    http://dx.doi.org/10.3390/coatings7100161
    http://hdl.handle.net/10576/16445
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    • Center for Advanced Materials Research [‎1551‎ items ]
    • Chemical Engineering [‎1213‎ items ]
    • Mechanical & Industrial Engineering [‎1483‎ items ]

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