A review of electrodeposited composite coatings with Ni–B alloy matrix

Abstract

Coating processes are of great importance for protecting the materials used in the industry from the damaging effects of external environments and mechanical forces. There are a wide variety of coating methods, but the electrochemical deposition method within them is one step ahead because of its low cost, easy manufacturability and rapidity. Ni–B coatings have been produced for many years by the electroless deposition method, but electrodeposited Ni–B coatings are a relatively new research topic and attract much attention in recent years. Due to its superior properties Ni–B alloy coatings are successfully used in many industries such as aerospace, automotive, petrochemical, chemical and electronics. Works on reinforcing Ni–B alloys with second phase particles to increase these properties to a better level has been increasing rapidly in recent years. Ni–B alloy and composite coatings were investigated in this study. Furthermore, the bath components, production parameters, contents and properties of Ni–B alloy matrix composite coatings were presented comparatively. It was revealed that reinforcing the Ni–B alloy matrix with ceramic particles affected properties such as crystal structure, morphology, hardness, corrosion and abrasion resistance very seriously.