**2. Electrodeposition of nickel composite/nanocomposite coatings**

Electrodeposition of composite coatings has been studied and researched by several scholars over the past few decades. The focus of the research is centred around the development and fabrication of advanced and novel surface coatings that can withstand both physical, chemical, and mechanical deterioration under service conditions. In order to produce these high-quality coatings, the mechanism of co-deposition of reinforcement particles with the matrix, optimi‐ zation of the process operating parameters, and the properties of the resultant deposits need to be fully understood.
