Increasing corrosion resistance of Ni-Mo composite electrodeposited coatings: Doping with boron

•Ni-Mo-B composite electrode posited coatings with high corrosion resistance were obtained. Corrosion-resistant Ni-Mo-B electrode posited coatings were obtained. Corrosion resistance of these coatings compared to Ni and Ni-Mo increased by ∼ 6.0 and ∼ 2.0 times, respectively. Increasing the boron content in the Ni-Mo-B coating had almost no effect on its corrosion resistance in this environment. The reduction of the corrosion rate was associated with the formation of a specific surface morphology – large, irregularly oval crystal aggregates that eliminated internal stresses and cracks caused by high molybdenum content.