Optimization of pulsed electro co-deposition for Ni-B-TiN composites and the variation of tribological and corrosion behaviors

Recent advances in electroless nickel‑boron coatings

“…Nickel/boron ions adsorb on the surface of particles (that are added into the EN-B plating solution) and are subsequently reduced on the substrate surface, resulting in particles entrapment by nickel/boron atoms that embed them in the coating [274].…”

“…The addition of particles in EN-B plating baths increases the nucleation rate of nickel over its crystallization rate, which distorts the lattice and modifies the crystallographic orientation in the coating [265,276]. The size of diamond nanoparticles added to EN-B had a significant influence on the modification of texture in the coating [277]; also the incorporation of SiC particles lead to a change of structure from amorphous to nano-crystalline by acting as nucleation centers and thus increasing the formation of nickel nuclei [261].…”

Microstructure and anti-corrosion performance of laser cladded Nb-modified Ni-based alloy coatings

“…Moreover, the increase in Y and decrease in n values were also observed as the Nb content increased from 3% to 9%, where the lower Y indicated the slower permeation speed of corrosion solution, and the higher n meant more stable corroded surface. 32 From above R c , R ct , Y , and n variations, it was concluded that both the slowest electron transfer and best capacitance behavior were obtained for the Ni-based coating with 3% Nb addition, which exhibited the highest resistance to electrochemical corrosion. However, with increasing Nb content, the corrosion surface became defective, and the passivation protection appeared to decrease, which led to significant deterioration in corrosion performance.…”

Preparation and Properties of Electrodeposited Ni-B-Graphene Oxide Composite Coatings

“…Until recently, the urgent demand for high-performance materials has forced researchers to conduct more research on Ni-B coatings. A number of studies have reported that the incorporation of various micro- and nanoparticles such as Al 2 O 3 [ 12 ], SiC [ 13 , 14 ], ZrO 2 [ 15 , 16 ], TiN [ 17 , 18 ], AlN [ 19 , 20 ], TiO 2 [ 21 ], and diamond [ 22 ] within the Ni-B matrix can further enhance the mechanical and anti-corrosion properties, among others. The embedding of these solid particles in a Ni-B alloy coating provides longer-lasting and effective protection for the surfaces of various mechanical components working in extreme environments such as high-load, high-temperature, or corrosive environments.…”