Recent advances in electroless-plated Ni-P and its composites for erosion and corrosion applications: a review

The metallic coating of surfaces plays a vital role in the protection of most industrial applications. Coatings can be carried through various routes (e.g., mechanical and electrochemical plating techniques). Electroless nickel coatings present unparalleled properties and a unique combination of corrosion and wear resistance features. Recently, the use and development of electroless nickel-phosphorus (ENP) coatings has attracted broad attention from many industries (e.g., oil and gas) due to their superior corrosion and wear resistance properties. In the present review article, mechanisms of ENP and preparation methods are briefly outlined. The review sheds light on properties of electroless Ni-P coatings and of their nanocomposites with an emphasis on new products and on their future development.This work was financially supported through NPRP grant # NPRP8-1212-2-499 from the Qatar National Research Fund (a member of the Qatar Foundation). Dr. Aboubakr M. Abdullah is on leave permission from Cairo University, Giza, Egypt.Scopu