DSpace logo

Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/12074
Title: Effect of electroless Ni plating on the properties of cold-sprayed Ni–Al2O3 coatings
Authors: Shrivastava, Sharad
Keywords: Mechanical Engineering
Electroless nickel (Ni)
Cold-sprayed Ni–Al2O3 coatings
Issue Date: Jun-2017
Publisher: Emerald
Abstract: This study investigated the effect of electroless nickel (Ni) plating (Np) on the properties of cold-sprayed nickel–alumina (Al2O3) coatings. To develop this two-layered coating system, nickel–alumina powder coating was first deposited by the cold spraying method on a mild steel substrate. Then, electroless Np was deposited on the as-sprayed nickel–alumina coating. The coating properties of the as-sprayed nickel–alumina coating and of the two-layered Np/nickel–alumina system were critically examined. The microstructural evolution was analysed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. In order to study possible changes in the mechanical properties of the system, Vickers microhardness experiments on the coatings and on the cross-sections were conducted. A possible improvement in the microhardness (14%) of the system was found after Np. Further, the corrosion behavior of the coating system was also studied critically. It was observed that the corrosion resistance of the Np/nickel–alumina coating system significantly improved and no corrosion effects and crack generation were observed at the substrate–coating interface
URI: https://www.icevirtuallibrary.com/doi/abs/10.1680/jsuin.16.00030
http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12074
Appears in Collections:Department of Mechanical engineering

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.