Synthesis and characterization of nickel–diamond nanocomposite layers

C Gheorghies,L P Georgescu,S Condurache-Bota,D E Rusu,A Bund

doi:10.1007/s13204-013-0285-y

C Gheorghies, L P Georgescu + Show 3 more

Open Access

https://doi.org/10.1007/s13204-013-0285-y

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Abstract

Electrodeposition can be used in order to prepare nanocomposite coatings made of nanoparticles dispersed into a metallic matrix, onto a metallic substrate. These kinds of coatings can combine the properties of the matrix and of the dispersed nanoparticles, which can lead to some interesting properties of the mixture. Including diamond nanoparticles into a metallic matrix can take advantage of the diamond properties, especially of its hardness and inertness in many chemical media. Still, the proper control of the electrodeposition parameters is a must in order to obtain the best microhardness and corrosion behavior of such nanocomposite coating. This paper proposes the comparative analysis between Ni/diamond nanocomposite coatings, prepared by electrodeposition, by varying several deposition parameters and the corresponding pure nickel coatings onto the same type of substrate, namely copper. Microstructural and morphological analysis of the two kinds of coatings are also performed and studied, along with microhardness measurements and corrosion resistance tests. It is concluded that specific electrodeposition technique and corresponding parameters must be used in order to prepare those Ni/diamond nanocomposite coatings with the best microhardness and best corrosion resistance.

Highlights

The co-deposition of particles from an electrolytic bath can be used in order to obtain nanocomposite layers within a metallic matrix, which contains inert particles spread as disperse phases (Watson 1993; Suzuki and Asai 1987)
This paper proposes the comparative analysis between Ni/diamond nanocomposite coatings, prepared by electrodeposition, by varying several deposition parameters and the corresponding pure nickel coatings onto the same type of substrate, namely copper
The experimental results proved that the microhardness and the roughness of the Ni/diamond nanocomposite coatings were strongly influenced by the presence of the nanoparticles as compared to pure nickel coatings

Summary

Introduction

The co-deposition of particles from an electrolytic bath can be used in order to obtain nanocomposite layers within a metallic matrix, which contains inert particles spread as disperse phases (Watson 1993; Suzuki and Asai 1987).

Results

Conclusion