Study of electroless plating Ni-W-P metal film on the diamond surface

A suitable pretreatment technology is utilized before the plating and prescriptions and technical parameters of electroless plating Ni-W-P are also confirmed.The testing methods such as SEM,XRD and so on were adopted to analyze the metal films on diamond after electroless plating and heating treatment.The testing results showed that the finer plating films on the diamond surface were formed after the plating.The compressive strengths of the plating films increased up to 27.14%.The XRD result proved that some carbides,such as WC,were formed on the surface between the diamond matrix and the plating film after heat treatment.So the compressive strength of the diamond became 16.28% higher than before.