Characterization of Pulse and Direct Current Methods for Electrodeposition of Ni-Co Composite Coatings Reinforced with Nano and Micro ZnO Particles

Ghazanlou SI, Farhood AHS, Ahmadiyeh S, Ziyaei E, Rasooli A, Hosseinpour S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science ASM International

Book Volume: 50A

Pages Range: 1922-1935

Journal Issue: 4

DOI: 10.1007/s11661-019-05118-y

Abstract

Ni-Co composite coatings reinforced with ZnO particles are prepared by either pulsed current (PC) or direct current (DC) electrodeposition methods. X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and EDX mapping are employed to investigate phase structure, surface morphology, elemental composition, and elemental distribution of coating, respectively. The effects of electrodeposition parameters such as stirring rate, average current density, and ZnO particles concentration on the microhardness of electrodeposited composite coating reinforced with nano and micro ZnO particles are investigated. Optimal values are determined for all of the above-mentioned parameters, which result in the maximum hardness of the coating. Any deviation from the optimal parameters leads to a reduction of the coating's microhardness. The SEM, atomic force microscopy (AFM), wear test, and electrochemical examinations revealed that changing the electrodeposition method from DC to PC and varying the size of ZnO particles from micro to nano affect the surface morphology from rough to smooth and reduce the surface friction coefficient, both of which enhanced the wear resistance of the coating and improved its corrosion resistance. The SEM results from worn surfaces illustrated that the size of reinforcing ZnO particles and the electroplating method change the wear mechanisms and worn surface morphology.

Authors with CRIS profile

Saman Hosseinpour Lehrstuhl für Partikelsynthese (LFG)

Involved external institutions

Sahand University of Technology (SUT) / دانشگاه صنعتی سهند‎ IR Iran, Islamic Republic of (IR) University of Tehran IR Iran, Islamic Republic of (IR) University of Tabriz/Universität Täbris IR Iran, Islamic Republic of (IR) Isfahan University of Technology (IUT) / دانشگاه صنعتی اصفهان IR Iran, Islamic Republic of (IR)

How to cite

APA:

Ghazanlou, S.I., Farhood, A.H.S., Ahmadiyeh, S., Ziyaei, E., Rasooli, A., & Hosseinpour, S. (2019). Characterization of Pulse and Direct Current Methods for Electrodeposition of Ni-Co Composite Coatings Reinforced with Nano and Micro ZnO Particles. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 50A(4), 1922-1935. https://doi.org/10.1007/s11661-019-05118-y

MLA:

Ghazanlou, Siavash Imanian, et al. "Characterization of Pulse and Direct Current Methods for Electrodeposition of Ni-Co Composite Coatings Reinforced with Nano and Micro ZnO Particles." Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 50A.4 (2019): 1922-1935.

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