Electroless Ni-P based nanocoating technology - A review

An advancement of electroless, (EL) Ni-P based coatings from micro to nano level is being discussed in this present review. This paper provides a coherent understanding of the EL coatings in terms of systems, bath composition for metal/alloy and composite coatings. The elements of the EL composite bath have been discussed. The studies on the second phase nanosized particles dispersed in the Ni-P matrix have been illustrated. The bonding mechanisms of EL coatings with the substrates have been discussed. The morphology, physical and mechanical properties of the Ni-P-X (X the second phase particles added into EL Ni-P matrix) composite coatings have discussed. A few applications have also been outlined that may reveal the capabilities of the EL Ni-P based nanocomposite coating technology to the relevant industries with the emphasis on tribological, corrosion, and magnetic behavior.