A study on the wear resistance of electroless Ni-P/Diamond composite coatings

The ability to co-deposit particulate matter in a matrix of electroless nic kel has led to a new generation of composite coatings. Polycrystalline diam ond is one of the many varieties of particulate matter that can be co-depos ited. Composite diamond coating is a regenerative layer of fine diamond par ticles dispersed in a hard electroless nickel matrix. In this work, experim ents have been carried out to study the effect of heat treatment, particle size and phosphorus content on the wear characteristics of the composite el ectroless coating containing diamond particles. The results indicate substa ntial increase in wear resistance after the coated sample containing 9-10 w t.%. P content having fine diamond particle size is annealed around 350 deg rees C. (C) 2000 Elsevier Science S.A. All rights reserved.