Electrodeposition Preparation and Performance Enhancement Mechanisms for Ni–Co–Fe Coatings

A coatingCoating with superior properties is essential to prolong the life of the mold. In this contribution, a high-performance Ni-Co-Fe ternary alloy coatingCoating is prepared by electrodepositionElectrodeposition, the parameters of the electrodepositionElectrodeposition processProcess are optimized, and first-principles calculations clarify the strengthening mechanism of Fe atoms. The results show that as the FeSO4 content in the deposition solution increases, the surface morphology of the coatingCoating gradually transitions from cellular to granular, and the hardnessHardness continuously decreases. Through comprehensive comparative analysis of coatingCoating quality and performance, the optimal preparationPreparation processProcess for Ni Co Fe ternary alloy coatingCoating was obtained as follows: FeSO4 content of 2g/L, current density of 4A/dm2, and temperatureTemperature of 45 ℃. The thickness of the coatingCoating sample obtained at this time is approximately 70–80 μm, the surface is bright and has good uniformity, and the hardnessHardness has increased by 24% compared to binary alloys. Furthermore, the introduction of Fe atoms can effectively enhance the properties of NiCo alloys, such as elasticity and hardnessHardness, and reduce the degree of anisotropyAnisotropy of the alloy. Electronic propertiesElectronic properties were investigated and showed that the improvement of the mechanical propertiesMechanical properties of the alloy can be attributed to the strong local covalent interaction after dopingDoping with Fe atoms.