A comparative study of electrodeposition techniques on the microstructure and property of nanocrystalline cobalt deposit

► Nanocrystalline Co deposit microstructure can be controlled by choice of electrodeposition technique. ► Relationship between properties, microstructure, and electrodeposition techniques established. ► Bipolar pulse electrodeposition gives high hardness and resistance to wear and corrosion. ► The electrodeposition mechanism involved in these process are explained.