Effect of Si3N4 nanoparticles on microhardness and corrosion resistance of Ni-Co electrodeposits

Mir Saman Safavi¹ Ali Rasooli²

1) 2. Department of Materials Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran.
2) 2. Department of Materials Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran.

Publication : 7th International Conference on Applied Researches in Science & Engineering (7carse.com)
Abstract :
In the present study, the effect of Si3N4 nanoparticles on the microhardness, and corrosion resistance of the Ni-Co nanocomposite layer were analyzed. For this goal, 5 g/L of Si3N4 nanoparticles were incorporated into the Ni-Co alloy electrolyte. Vickers microhardness and electrochemical impedance spectroscopy (EIS) assays were used to determine the microhardness and corrosion resistance of the coatings, respectively. Results showed that the added nanoparticles increased the microhardness and charge-transfer resistance of the Ni-Co coatings by ≈100 HV and ≈40 kΩ cm2, respectively.
Keywords : Si3N4 nanoparticles microhardness corrosion resistance Ni-Co coating.