Effect of surfactants on the electrodeposition of Cu-TiO2 composite coatings prepared by jet electrodeposition

Ni–Al2O3 composite coatings were prepared with a modified Watt’s bath by using jet electrodeposition method. As the key process parameter, current density and the addition of Al2O3 nanoparticles in electrolyte were studied about the effect on the surface morphology and co-deposition of Al2O3 nanoparticles of composite coating. The mechanical and tribological properties of the composite coating were also tested. The results show that properly increasing the current density and Al2O3 addition can increase the co-deposition of nanoparticles in the coating and promote the formation of a dense and refined coating structure. Using the optimized process parameters of current density (300 A/dm2) and Al2O3 addition (30 g/L), the co-deposition of Al2O3 in the composite coating can reach a maximum of 13.1 at.%. The hardness of the coating reaches the peak at 623 HV. The wear rate of the composite coating is also greatly reduced with optimized parameters.

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Enhanced Wear Performance of Cu-Carbon Nanotubes Composite Coatings Prepared by Jet Electrodeposition

Materials ◽

10.3390/ma12030392 ◽

2019 ◽

Vol 12 (3) ◽

pp. 392 ◽

Cited By ~ 2

Author(s):

Dongdong Ning ◽

Ao Zhang ◽

Hui Wu

Keyword(s):

Carbon Nanotubes ◽

Surface Morphology ◽

Composite Coating ◽

Composite Coatings ◽

Sodium Dodecyl ◽

Wear Test ◽

Uniform Electric Field ◽

Wear Performance ◽

Jet Electrodeposition ◽

Pure Cu

Cu-carbon nanotubes (CNTs) composite coatings with high CNT content and uniformly distributed CNTs were successfully prepared via jet electrodeposition. Pristine CNTs, without any treatment like acid functionalization, were used. Anionic surfactant sodium dodecyl sulfate (SDS) was used to increase the wettability of the CNTs and improve the content of incorporated CNTs. With an appropriate SDS concentration (300 mg/L) in the electrolyte, the incorporated CNT content is as high as 2.84 wt %, much higher than the values reported using conventional electrodeposition (0.42–1.05 wt %). The high-content CNTs were uniformly distributed in the composite coating. The surface morphology of this composite coating (2.84 wt % CNTs) was flat due to the uniform electric field in jet electrodeposition. In the wear test a with load of 1 N and sliding speed of 0.02 m/s, the wear rate of this composite coating was 1.3 × 10−2 mg/Nm, 85.4% lower than that of pure Cu. The enhanced wear performance of Cu-CNTs composite coatings can be attributed to high CNT content and flat surface morphology.

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Electrochemical corrosion resistance and wear behavior of Ni-P- ZrO2 Composite Coatings prepared by Magnetically-Assisted Jet-Electrodeposition

International Journal of Electrochemical Science ◽

10.20964/2020.01.69 ◽

2020 ◽

pp. 816-829

Author(s):

Fu Xiu-qing ◽

Keyword(s):

Corrosion Resistance ◽

Wear Behavior ◽

Composite Coatings ◽

Electrochemical Corrosion ◽

Jet Electrodeposition ◽

Electrochemical Corrosion Resistance ◽

Magnetically Assisted

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Wear resistance of Ni-Co/SiC composite coating by jet electrodeposition in the presence of magnetic field

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405419875353 ◽

2019 ◽

Vol 234 (3) ◽

pp. 431-438 ◽

Cited By ~ 2

Author(s):

Wei Jiang ◽

Lida Shen ◽

Kai Wang ◽

Zhanwen Wang ◽

Zongjun Tian

Keyword(s):

Magnetic Field ◽

Wear Resistance ◽

Composite Coating ◽

Composite Coatings ◽

Testing Machine ◽

Three Dimensional ◽

X Ray Diffraction ◽

Globular Structure ◽

Nanoparticle Agglomeration ◽

Jet Electrodeposition

The Ni-Co/SiC composite coatings were prepared via jet electrodeposition in the presence of magnetic field. The microstructure and texture orientation of the composite coatings were analyzed via field emission scanning electron microscopy, three-dimensional profiling, and X-ray diffraction. The microhardness and wear resistance were characterized by a microhardness tester and a friction–abrasion testing machine. The results indicated that nano-SiC particles improved the surface morphology of the Ni-Co/SiC composite coating. In jet electrodeposition, globular structure aggregation began to form protrusions in the Ni-Co/SiC composite coating due to nanoparticle agglomeration when 6 g/L of nano-SiC was added. The Ni-Co/SiC (6 g/L) composite coating became uniform and densification by jet electrodeposition in magnetic field, with higher microhardness and better wear resistance. The microhardness of the Ni-Co/SiC composite coating increased to 626 ± 14 HV, and the corresponding friction coefficient was as low as 0.317.

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