Electroless Nickel (EN) Electroless nickel (EN) has been used for a long time to protect parts from corrosion and wear — in fact, for over two centuries. Electroless nickel is a surface treatment process that deposits a nickel-phosphorus alloy onto a substrate without the use of electric current from a bath or the substrate itself. Instead, a nickel-phosphorus (NiP) or nickel-boron (NiB) alloy is introduced into a chemical reducing agent (such as sodium hypophosphite), which reduces nickel ions into metallic nickel, allowing the metal to be uniformly deposited onto the substrate. This process offers numerous advantages, including uniform coating thickness, corrosion and wear resistance, excellent lubricity, magnetic properties, and weldability. It can also be used to coat non-conductive materials. Electroless nickel plating has a wide range of applications, including in computers, electronics, automotive, machinery, petroleum and chemical equipment, printing, and food processing industries.