Effect of Nanodiamond Content in the Plating Solution on the Corrosion Resistance of Nickel–Nanodiamond Composite Coatings Prepared on Annealed 45 Carbon Steel

A nickel-nanodiamond composite coating was prepared on the surface of annealed 45 carbon steel by double-pulse electrodeposition. The effect nanodiamond particle content morphology, grain size and wear corrosion resistance were investigated. According to analysis test results X-ray diffractometry scanning electron microscopy, it found that cathodic polarization electrodeposition process enhanced after addition particles Watts nickel plating solution. positively charged facilitate reduction reaction at cathode. Nanodiamond provide crystalline growth sites for non-spontaneous nucleation atoms. As increases, diffusely distributed are able attract more ions deposit nuclei, its fine crystallization resulting in improved plating. Among results, potential smallest when solution 10 g/L. relatively flat smooth, with good density a uniform distribution, element C largest, reaching 1.99%.