Studying the microstructure, electrical, and electrochemical behaviour of the Cu-10WC/x GNs for electrochemical machining electrode and energy application
by Hossam Mohamed Yehia; Fathei Nouh; Omayma A. El-Kady; Walaa Abd-Elaziem; E.M. Elsayed
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 24, No. 6, 2022

Abstract: Electroless deposition, followed by the powder metallurgy method, has been used to manufacture Cu-10WC/GNs nanocomposite with graphene content of 0, 0.25, 0.5, 0.75, and 1 wt.%. The produced composites' microstructure, density, electrical conductivity, and corrosion resistance were investigated. The microstructure characterisation showed that the tungsten carbide and graphene coated with Cu nanoparticles are homogeneously distributed in the Cu matrix. The electrical conductivity increased with raising the coated GNs percentage to 4.9 × 10⁷ Ohm m^-1 for Cu-10WC/1 wt% GNs (more than the Cu-10WC by ~ 81.4%). By reinforcing copper with WC, the deposition current was decreased, whereas the addition of GNs induced a significant increase in the current deposition values as well as the resistance polarisation. Moreover, the corrosion rate gradually decreases with increasing the graphene percentage. The Cu-10WC/1GNs composite has a minimum corrosion rate of 10.15 mm/year (less than the monolithic copper by ~72%).

Online publication date: Mon, 23-Jan-2023

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Machining and Machinability of Materials (IJMMM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com