Jet Electrodeposition of Ni-SiO2Nanocomposite Coatings with Online Friction and Its Performance
Source abstract
Abstract
To improve the surface quality and performance of Ni-SiO 2 nanocomposite coatings, jet electrodeposition of SiO 2 nanoparticles (diameter 20–30 nm) with Watt's nickel solution was used to process on graphite substrate accompanied by ceramic stick rolling and friction (R&F) online. The crystal structure and microstructure of coatings were analyzed by using X-ray diffraction and field emission scanning electron microscope, respectively. The corrosion resistance of the samples was evaluated by potentiodynamic polarization (Tafel). By studying the influences of different concentrations of SiO 2 in the solution and the effect of R&F on the coatings, we found that adding a certain amount of nano-SiO 2 in the solution can significantly increase the microhardness of coatings (from 550 HV to 627 HV or a 14% increase). R&F further caused the microhardness to reach 711 HV, which is a 20% increase relative to pure Ni coatings. Moreover, R&F can help to remove cellular bulge on the surface of nanocomposite coatings, thereby improving surface quality. The corrosion resistance of Ni-SiO 2 nanocomposite coatings is better than that of pure Ni coatings.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrodeposition and Electroless Coatings · Diamond and Carbon-based Materials Research · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
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