Nguyen, Phuong Hoai Nam
(2020)
Electrodeposited nickel–graphene nanocomposite
coating: effect of graphene nanoplatelet size on its
microstructure and hardness.
RSC Advances
.
Abstract
In this study, the effect of graphene nanoplatelet (GNP) size on the microstructure and hardness of the
electrodeposited nickel–graphene nanocomposite coatings were investigated. GNPs with different sizes
were prepared by using a high energy ball milling technique. The experimental result revealed the high
energy ball milling technique could reduce the size, increase the surface area, and improve the
dispersion ability of GNPs. The microstructure, hardness, and components of the nanocomposite
coatings were greatly affected by GNP sizes. The highest microhardness was measured to be 273 HV for
the nanocomposite coatings containing 5 h-milled GNPs, which is increased up to �47% compared to
pristine Ni coating. The enhancement in the hardness is attributed to the uniform dispersion of the small
GNP sizes inside the Ni matrix and the Ni grain size reduction when using milled GNPs.
Actions (login required)
 |
View Item |
