To explore the effect of magnetic field on the properties of Ni–P–SiC composite coatings, Ni–P–SiCcomposite coatings were prepared on 45 steel by magnetic field-enhanced jet electrodeposition. Thesurface morphology, microstructure, and composition of the composite coatings were measured byscanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray diffraction(XRD), respectively. The microhardness was tested using a Duramin-40 hardness tester, and thecorrosion resistance was observed under a LEXT4100 laser confocal microscope. The results showedthat the surface of the Ni–P–SiC coatings prepared under a magnetic field-enhanced jet electrodepositionwas flat. Moreover, we noted improvements in the microhardness, wear resistance, and corrosionresistance of the composite coatings with the increase in the magnetic field strength. At the samemagnetic flux density, applying a parallel magnetic field was found to be more effective than applyinga vertical magnetic field. When the parallel magnetic field intensity was 0.5 T, the coating surface wasuniform and compact, and its microhardness reached the maximum value of 688.8 Hv, with optimalwear and corrosion resistances..
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