Abstract
Cu–Ni alloys are widely used and implemented due to their remarkable mechanical and electrochemical properties in most of the engineering applications. The reinforcement of graphene nanoplatelets (Gr) in Cu–Ni alloy can be utilized to enhance the properties of Cu–Ni alloy. In the present work, Ni as an alloying element and graphene nanoplatelets as reinforcing element were co-deposited with Cu to prepare Cu–Ni/Gr composite coatings by electro-co-deposition method. The influence of various current densities on surface morphology, composition, microstructure, crystallite size, lattice strain, microhardness, coefficient of friction and corrosion resistance of the resulting composite coatings were investigated and were presented in detail. Based on the experimental results, the coatings prepared at \(6\hbox { A dm}^{-2}\), exhibit a reduced grain size with enhanced mechanical properties and corrosion resistance.
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Acknowledgements
We gratefully acknowledge Birla Institute of Technology and Science (BITS), Pilani Campus, Rajasthan, India, for the financial support to this research. We are thankful to Ms Neelakshi Sharma, Mr M Dinachandra Singh and Prof Anshuman Dalvi of BITS, Pilani, for their help and support in X-ray diffraction. We express our sincere thanks to Dr Girish Kant from Mechanical Department, BITS, Pilani, for his support in tribological testing. We are thankful to Dr Surojit Pande from Chemistry Department, BITS, Pilani, for his support in corrosion testing. We are thankful to Material Research Centre, MNIT, Jaipur, for the technical assistance during microhardness characterization.
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Pingale, A.D., Belgamwar, S.U. & Rathore, J.S. Synthesis and characterization of Cu–Ni/Gr nanocomposite coatings by electro-co-deposition method: effect of current density. Bull Mater Sci 43, 66 (2020). https://doi.org/10.1007/s12034-019-2031-x
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DOI: https://doi.org/10.1007/s12034-019-2031-x