Investigation and fabrication of multifunctional nanoparticle surface coatings for wear-corrosion synergistic resistance

Authors: Siddaiah, A., Khan, Z., Bhutta, M. and Menezes, P.

Start date: 20 May 2018

Publisher: ScholarOne

Place of Publication: USA

Pulse plating of nickel based composite nanoparticle surface coatings was studied and their effective resistance to wear, corrosion and wear-corrosion synergism was analyzed in dynamic oil medium. The nickel based composite surface coatings were prepared using graphene (6-8 nm) and aluminum oxide (<50 nm) nanoparticle. Investigations were performed to formulate a stable electrodeposition of these composite surface coatings onto steel substrate with good surface finish. These investigations helped identify the optimum current density and other experimental conditions with pulse frequencies (10–20 Hz) and duty cycles (10–20%) to yield harder coatings. Corrosion and tribo-corrosion investigations were performed on these composite coatings in a dynamic oil environment. These investigations provided fundamental understanding of corrosion and tribo-corrosion mechanisms in a dynamic oil environment. The present study has wide applicability in various drive train components used in extreme working environments to enhance the power density capabilities of the mechanical system.

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