Electrochemical Deposition of Ni, NiCo Alloy and NiCo–Ceramic Composite Coatings—A Critical Review

Abstract

In recent years, alloy and alloy-ceramic coatings have gained a considerable attention owing to their favorable physicochemical and technological properties. In this review, we investigate Ni, NiCo alloy and NiCo–ceramic composite coatings prepared by electrodeposition. Electrodeposition is a versatile tool and cost-effective electrochemical method used to produce high quality metal coatings. Surface finish and tribological properties of the coatings can be further improved by the addition of suitable agents and control of deposition operating conditions. In this review, Ni, NiCo alloy and NiCo–ceramic composite coatings prepared by electrodeposition are reviewed by critically evaluating previous researches. The use of the coatings and their potential for future research and development are discussed.

Influence of Bath Hydrodynamics on the Micromechanical Properties of Electrodeposited Nickel-Cobalt Alloys

“…Therefore, owing to their excellent micromechanical, tribological, and magnetic properties, the electrochemically deposited nickel-cobalt (eNiCo) alloys have gathered special attention of the research community in the recent decades as a promising candidate for the generation of microstructures for micromechanical applications. This is further evident by series of review papers from the year 2019 by authors of this paper [14] and Karimzadeh et al [9], in the year 2020 by Mbugua et al [15] and Safavi et al [16], and very recently in 2021 by Omar et al [17], all of which comprehensively described the current and prospective applications of eNiCo alloys.…”

“…The implications of reduction in δ as function of BHD on the nucleation and growth kinetics was modelled in situ by Hyde and Crompton [34] as shown in Equation (15), where δ is related to the nucleation rate (A), i.e., the number of nuclei formed per active site/second, and the description of variable B can be found in [34]. The relation was used to extract A by fitting the recorded potentiostatic voltammograms (i.e., current-time transients) obtained using varying BHD conditions.…”

Electrochemical Deposition of Pure-Nickel Microstructures with Controllable Size

“…Electrochemical deposition (ECD) is a typical additive micromachining technology in which the product is formed layer by layer, and ECD technology based on an aqueous solution generally has the advantages of a wide range of application materials, low operating temperature, coordinated control of microstructure, morphology, and properties, and flexible application form, among others [ 12 , 13 ]. Theoretically, when the metal atoms or grains formed by the reduction reaction are stacked in a controlled manner as designed, metal-based structures and parts of any shape can be fabricated by ECD [ 14 ].…”

Two‐step electrodeposition of Hausmannite sulphur reduced graphene oxide and cobalt‐nickel layered double hydroxide heterostructure for high‐performance supercapacitor

“…This is due to attributes such as low cost and efficient utilisation of active materials, morphology control, the absence of binders, and strong adhesive forces between AM and the current collector (substrate). These properties endow electrodeposited LDHs with a larger specific capacity, higher rate capability, and cyclic stability 16,17 …”

“…These properties endow electrodeposited LDHs with a larger specific capacity, higher rate capability, and cyclic stability. 16,17 LDHs, however, suffer from low electrical conductivity, low cyclic performance, aggregation, poor electrochemical stability, and poor rate capability due to slow reaction kinetics at high specific currents when performing charge-discharge processes. 18,19 This can be alleviated by producing a highly conductive and more stable heterostructure system with spinels configuration.…”