Microstructure, phase transition and tribological performances of Ni3Si-based self-lubricating composite coatings

► A series of Ni3Si-based coatings were fabricated by a powder metallurgical route. ► Phase transition between Ni31Si12 and Ni3Si occurred during the friction process. ► 15 wt.% MoS2 in the coating shows excellent self-lubricating property above 400 °C.