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Open AccessArticle

Effect of Current Density on the Performance of Ni–P–ZrO2–CeO2 Composite Coatings Prepared by Jet-Electrodeposition

1
College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
2
College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
3
Key laboratory of Intelligence Agricultural Equipment of Jiangsu Province, Nanjing 210031, China
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(7), 616; https://doi.org/10.3390/coatings10070616
Received: 4 May 2020 / Revised: 19 June 2020 / Accepted: 26 June 2020 / Published: 29 June 2020
(This article belongs to the Section Corrosion, Wear and Erosion)
The objective of this study was to improve the surface properties, hardness, wear resistance and electrochemical corrosion resistance of #45 steel. To this end, Ni–P–ZrO2–CeO2 composite coatings were prepared on the surface of #45 steel using the jet-electrodeposition technique by varying the current density from 20 to 60 A/dm2. The effect of current density on the performance of the composite coatings was evaluated. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were applied to explore the surface topography, elemental composition, hardness and electrochemical corrosion resistance of the composite coatings. The results showed that with the increase in the current density, the hardness, wear resistance, and electrochemical corrosion resistance tends to increase first and then decrease. At a current density of 40 A/dm2, the hardness reached a maximum of 688.9 HV0.1, the corrosion current reached a minimum of 8.2501 × 10−5 A·cm−2, and the corrosion potential reached a maximum of −0.45957 V. At these values, the performance of the composite coatings was optimal. View Full-Text
Keywords: ZrO2 nanoparticles; CeO2 nanoparticles; composite coatings; jet-electrodeposition; current density ZrO2 nanoparticles; CeO2 nanoparticles; composite coatings; jet-electrodeposition; current density
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MDPI and ACS Style

Song, Z.; Zhang, H.; Fu, X.; Lin, J.; Shen, M.; Wang, Q.; Duan, S. Effect of Current Density on the Performance of Ni–P–ZrO2–CeO2 Composite Coatings Prepared by Jet-Electrodeposition. Coatings 2020, 10, 616.

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