Abstract
Zinc is a well-suited low-cost and widely alloyed metal used in several metal matrix composites (MMCs) due to its easy availability, low melting point, excellent thermal and electrical properties. However, Zn metal alone is a low strength material which restricts its applications mostly for alloying purpose. Inclusion of graphene nano-reinforcements in Zn metal matrix could result in high strength and cost-effective nanocomposite material. In this paper, impermeable graphene nano-reinforcements are encapsulated in Zn metal matrix using a modified electro-co-deposition method followed by powder metallurgy. The uniform distribution of nano-reinforcement of graphene layers across the Zn metal matrix was achieved. The prepared nanocomposite was characterized and tested to evaluate the microstructural, morphological and tribo-mechanical properties. The graphene content in Zn matrix decreased the crystallite size and imparted the advantageous grain strengthening effect. The graphene reinforced Zn MMC sample showed a significant enhancement in the mechanical and tribological properties than that of pure Zn sample.
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