Effect of Amorphous Boron on the Microstructure and Corrosion Properties of Ni-W Coatings

In this study, a nickel-tungsten/amorphous boron composite coating (Ni-W/B) was successfully deposited on carbon steel using the electrodeposition method. Electrodeposition performed by dispersing varying quantities of amorphous (0, 0.5, 1, and 3 g/L) particles in Ni-W electrolytic bath. The microstructure morphology coatings were characterized scanning electron microscope (SEM). electrochemical properties alloy Ni-W/B studied impedance spectroscopy (EIS), polarization curves, immersion testing. It found that addition to can significantly smooth modified improve corrosion resistance, probably changing from pitting uniform with increasing content. concentration 0.5 g/L bath provided highest resistance among all coatings.