Effect of Grit Blasting and Polishing Pretreatments on the Microhardness, Adhesion and Corrosion Properties of Electrodeposited Ni-W/SiC Nanocomposite Coatings on 45 Steel Substrate

In this study, a grit-blasting pretreatment was used to improve the adhesion, corrosion resistance and microhardness of Ni-W/SiC nanocomposite coatings fabricated using conventional electrodeposition technique. Prior deposition, grit blasting polishing (more commonly used) pretreatments were prepare surface substrate 3D morphology pretreated substrates characterized laser scanning confocal microscopy. The coating cross-section analyzed electron microscopy (SEM). chemical composition, crystalline structure, microhardness, adhesion behavior deposited energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), tester, scratch tester an electrochemical workstation, respectively. results indicated that SiC addition improved resistance. nanocomposites by exhibited best strength, up 36.5 ± 0.75 N. Its hardness highest increased 673 5.47 Hv its compared one polishing.